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1

Bhadke, Mr S. D. "Design and Fabrication of Solar Operated Car." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 15, 2021): 1177–80. http://dx.doi.org/10.22214/ijraset.2021.36307.

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This work, focused on an idea about hybrid solar car technology which solves the major problem of fuel and pollution in present days. Determine how feasible widespread change to hybrids would be in future with all information taken into account, concluded that hybrids have several advantages as fuel efficient, low pollution. In the present work a complete drawing and drafting of hybrid solar car have been prepared using CATIA V5R19 software. After complete analysis of this drawing by using ANSYS 14.5 it is find out bear capability of load, stress, and strain of front & rear collision of car frame. A completed data are analyzed to examine the technical aspects of the hybrid car technology. Overall, hybrid technology has a lot of potential in the distant future, but as for right now they are not a significant applied over today's internal combustion engine.
2

Khandker, Varsha, and Indrajit Thakurata. "Factors encouraging complete adoption of agricultural technologies." Journal of Agribusiness in Developing and Emerging Economies 8, no. 2 (June 4, 2018): 270–87. http://dx.doi.org/10.1108/jadee-05-2016-0037.

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Purpose Hybrid rice is considered as one of the technologies having the potential to push the production frontier to meet the growing demand for rice in India. The technology was introduced in India in 1994 but is yet to see widespread adoption. The purpose of this paper is to identify the factors that influence the partial/complete adoption of hybrid rice technology by the farmers in India. This study also assesses the factors behind difference in the share of land allocated to hybrid rice cultivation by farmers. Design/methodology/approach The study employs a Tobit model to evaluate the impact of factors related to technology, farmer, farm and geographical location on the decision to adopt hybrid rice. Data for this study are compiled from surveys of 441 hybrid rice growing farmers across 3 Indian states conducted during 2012-2013. Findings The paper finds that farmers with smaller landholdings, higher education and higher experience of growing hybrid rice are more likely to be complete adopters. Farmers reporting good demand for hybrid rice output and availability of subsidy on hybrid rice seeds also have higher probability of being complete adopters. However, the availability of hybrid rice seeds in government outlets and cultivating multiple kharif crops are negatively related to the extent of hybrid rice adoption. The results suggest insignificant impact of age, family size, ownership of cattle and machinery on the adoption level of hybrid rice by the farmers. Research limitations/implications Although the sample for this study has been collected from three states with different agro-climatic zones and productivity, the results cannot be generalized for other states. Originality/value There is a great potential to increase the area under hybrid rice cultivation in India. This study is one of the first attempts to look at the adoption levels of hybrid rice in India and determine the factors which might be hindering the complete adoption of the technology. Focusing on the factors positively related to complete adoption can help in enhancing the area under hybrid rice and similar approach can be used for other new agricultural technologies in the developing country context.
3

Alvarez-Andrade, Sergio. "On Complete Convergence for the Hybrid Process." Communications in Statistics - Theory and Methods 44, no. 5 (March 4, 2015): 1044–52. http://dx.doi.org/10.1080/03610926.2012.750360.

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Schneider, David, and Jennifer McCullough. "The Basic Communication Course and College Student Retention: A Longitudinal Analysis." Journal of Communication Pedagogy 7 (2023): 148–64. http://dx.doi.org/10.31446/jcp.2023.1.10.

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This longitudinal study examined the relationship between two formats of the basic communication course (BCC) and first-year college student retention over a four-year period. Chi-square and logistic regression models indicated students who completed the BCC were more likely to be retained than those who did not complete the BCC. While completing the BCC was associated with retention for both formats, the hybrid BCC format was more consistently related to retention than the public speaking BCC. Students from certain demographic groups who completed the hybrid BCC were retained more frequently than students from the same demographic who did not complete the hybrid BCC. Demographics for the public speaking BCC revealed a different retention profile. Implications and future directions concerning the BCC are discussed.
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Widura Ritonga, Arya, Muhamad Syukur, Sriani Sujiprihati, and Arif Rahman Hakim. "Evaluasi Pertumbuhan dan Daya Hasil Empat Belas Cabai Hibrida." Comm. Horticulturae Journal 1, no. 1 (August 7, 2017): 20. http://dx.doi.org/10.29244/chj.1.1.20-25.

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Planting chili pepper hybrid varieties offers an alternative strategy to fill the needs of chili pepper in Indonesia. Theaim of the experiment was to evaluate and select fourteen chili pepper hybrids thus obtained chili peppers hybrid potential to be released as hybrid varieties. The experimental design was used Randomized Complete Block Design (RCBD) with one factor and three replications. Plant materials consist of fourteen chili pepper hybrid and one commercial hybrid of chili pepper. IPB CH-I produced higher selection index value than commercial hybrid of chili pepper. The IPB CH-I was potential to be released as hybrid variety of chili pepper.Keywords: hybrid varieties, selection, selection index
6

Davletov, F. A., K. P. Gainullina, А. М. Dmitriev, and E. V. Badamshina. "Inheritance features of productivity traits in pea hybrids F<sub>1</sub> and F<sub>2</sub>." Grain Economy of Russia, no. 3 (July 6, 2023): 21–28. http://dx.doi.org/10.31367/2079-8725-2023-86-3-21-28.

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The main reserve for improving of pea grain production is the development of new highly productive varieties. In this case, intraspecific hybridization is the main tool, but the patterns of inheritance by hybrids of several economically valuable traits are still insufficiently studied. The purpose of the current work was to establish the inheritance nature of productivity traits in pea hybrids. The trials were carried out in 2020–2022. The objects of the study were 8 pea hybrid combinations F1 and F2. The estimation of the collection and hybrid material was carried out in accordance with the Methodology of the State Variety Testing (2019). Segregation analysis in F1 pea hybrids has revealed different types of inheritance of the studied quantitative traits, from hybrid depression to overdominance. According to ‘plant height’, the dominance degree (hp) varied from 0 to 3.00. According to ‘number of pods per plant’ it varied from –0.50 to 3.00. According to ‘number of beans per pod’ it varied from 1.67 to 4.00. According to ‘1000-seed weight’ it varied from 0.20 to 0.44. Hybridological analysis of F2 pea plants based on ‘plant height’ in 4 hybrid combinations has revealed incomplete negative dominance (hp from –0.20 to –0.43), in 4 hybrid combinations it was incomplete dominance (hp from 0.60 to 0.69). According to ‘number of pods per plant’, two hybrid combinations have shown complete dominance (hp = 1.00), one hybrid combination has shown incomplete dominance (hp = 0.35), five hybrid combinations have shown incomplete negative dominance (hp from –0.50 to –0, 71). The trait ‘1000-seed weight’ in all hybrid combinations was inherited according to the type of incomplete dominance (hp from 0.10 to 0.16). According to ‘number of beans per pod’, four hybrid combinations have shown incomplete dominance (hp from 0.67 to 0.83); one hybrid combination has shown incomplete negative dominance (hp = –0.50); three hybrid combinations have shown complete negative dominance (hp = –1.00).
7

Abd, M. S., Z. A. Abdul Hamed, and M. A. Ghadir. "Response of Maize Hybrids and Inbred to Yield and its Components Under Irrigation Interval." IOP Conference Series: Earth and Environmental Science 904, no. 1 (November 1, 2021): 012003. http://dx.doi.org/10.1088/1755-1315/904/1/012003.

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Abstract In order to estimate some genetic parameters for five inbred lines AG116, AG-M20, MH17, MH121 and ZM4, they were entered into a complete cross-breeding program. Khalidiya - east of Ramadi in two seasons (fall 2019 and spring 2020). The comparison experiment was applied using the RCBD randomized complete block design in the order of split-plot and with three replications, where the main plots for irrigation was interval 6, while 12 days and the secondary plots for genotypes (breeds and hybrids) to estimate some characteristics of yield and its components. Parental inbred and their reciprocal and inverse hybrids differed significantly in number of days from planting to 50% tasseling, number of rows per ear, number of grains per row, grain weight and grain yield in the two seasons of the study, cross-hybrid MH17 × AG-M20 and the inverse hybrid AG116 × ZM4 outperformed in the fall season 2019 when it gave a yield of 173.00 g plant-1 and 169.60 g plant-1, respectively. In the spring season 2020, the cross-hybrid MH121×MH17 and the reverse hybrid AG116×AG-M20 recorded the highest average for the character, reaching 165.20 and 142.90 g plant-1, respectively.
8

Smirnov, N. V. "A complete-order hybrid identifier for multiprogrammed stabilization." Automation and Remote Control 67, no. 7 (July 2006): 1051–61. http://dx.doi.org/10.1134/s0005117906070046.

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Sundar, N. S., D. N. Jayasimha, D. K. Panda, and P. Sadayappan. "Hybrid algorithms for complete exchange in 2D meshes." IEEE Transactions on Parallel and Distributed Systems 12, no. 12 (2001): 1201–18. http://dx.doi.org/10.1109/71.970553.

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Csuhaj-Varj�, Erzs�bet, Carlos Mart�n-Vide, and Victor Mitrana. "Hybrid networks of evolutionary processors are computationally complete." Acta Informatica 41, no. 4-5 (March 2005): 257–72. http://dx.doi.org/10.1007/s00236-004-0158-7.

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Jin, Gang, Xing Huang, Tao Chen, Xu Qin, Jingen Xi, and Kexian Yi. "The complete chloroplast genome of agave hybrid 11648." Mitochondrial DNA Part B 5, no. 3 (June 4, 2020): 2345–46. http://dx.doi.org/10.1080/23802359.2020.1775145.

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12

Michalak, Tomasz, Talal Rahwan, Edith Elkind, Michael Wooldridge, and Nicholas R. Jennings. "A hybrid exact algorithm for complete set partitioning." Artificial Intelligence 230 (January 2016): 14–50. http://dx.doi.org/10.1016/j.artint.2015.09.006.

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Martínez-Ponce, Geminiano, Cristina Solano, and Carlos Pérez-Barrios. "Hybrid complete Mueller polarimeter based on phase modulators." Optics and Lasers in Engineering 49, no. 6 (June 2011): 723–28. http://dx.doi.org/10.1016/j.optlaseng.2010.12.011.

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14

Blau, Gary, Sherry Jarrell, Michael McCloskey, Wayne Williams, Alan Kerzner, and Tyra Ford. "Further Exploring Differences in Business Undergraduate Perceived Outcomes by Preferred Classroom Learning Environment." Journal of Education and Learning 7, no. 5 (June 19, 2018): 20. http://dx.doi.org/10.5539/jel.v7n5p20.

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The purpose of this study was to compare business undergraduate online/hybrid course perceptions across three different preferred classroom learning environments (CLE): online, hybrid, or face-to-face (F2F). Six different perception-based outcomes were measured: easy to use technology, peer-perceived favorability of online/hybrid courses (peer-PFoOC); instructor-perceived favorability of online/hybrid courses (instructor-PFoOC); intent to recommend online/hybrid courses; institutional commitment; and persistence towards graduation. Undergraduates who were simultaneously taking at least one online or hybrid class and F2F course, i.e., mixed course delivery format, voluntarily completed an online survey. In the fall of 2017, a complete-data sample of n = 242 respondents was obtained and in the spring of 2018 the complete-data sample was n = 237. Consistent results across both samples were found for the outcomes. Undergraduates who preferred either online or hybrid CLE had significantly higher peer-PFoOC, instructor-PFoOC, and intent to recommend online/hybrid courses than students preferring an F2F environment. There were no differences between these three CLE preference groups in perceived easy to use technology, institutional commitment or persistence. As universities increase their online and hybrid course offerings monitoring student perceived outcomes between F2F and online/hybrid course sections will continue to be important.
15

Zhu, Jieqing, Jianghai Zhu, and Timothy A. Springer. "Complete integrin headpiece opening in eight steps." Journal of Cell Biology 201, no. 7 (June 24, 2013): 1053–68. http://dx.doi.org/10.1083/jcb.201212037.

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Carefully soaking crystals with Arg-Gly-Asp (RGD) peptides, we captured eight distinct RGD-bound conformations of the αIIbβ3 integrin headpiece. Starting from the closed βI domain conformation, we saw six intermediate βI conformations and finally the fully open βI with the hybrid domain swung out in the crystal lattice. The β1-α1 backbone that hydrogen bonds to the Asp side chain of RGD was the first element to move followed by adjacent to metal ion-dependent adhesion site Ca2+, α1 helix, α1’ helix, β6-α7 loop, α7 helix, and hybrid domain. We define in atomic detail how conformational change was transmitted over long distances in integrins, 40 Å from the ligand binding site to the opposite end of the βI domain and 80 Å to the far end of the hybrid domain. During these movements, RGD slid in its binding groove toward αIIb, and its Arg side chain became ordered. RGD concentration requirements in soaking suggested a &gt;200-fold higher affinity after opening. The thermodynamic cycle shows how higher affinity pays the energetic cost of opening.
16

Cherkasova, E. A. "Influence of cultivation technology elements on the weed component of agrophytocenosis in spring rape crops." Siberian Herald of Agricultural Science 53, no. 1 (February 20, 2023): 29–35. http://dx.doi.org/10.26898/0370-8799-2023-1-4.

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Data from field experiments for 2019-2021 conducted under conditions of the North Kazakhstan region are presented. The methods of improving the elements of cultivation technology of spring rape varieties and hybrids aimed at optimizing the indicators of productivity are shown. The species composition, biological groups of weeds, components of agrophytocenosis and the degree of weed infestation of spring rape varieties and hybrids were determined. Basic recordings and observations were made in accordance with the methodology of state variety testing. The following varieties were included in the study: Jubilee, Geros, Maikudyk, Hunter, Mahaon and hybrids: Caliber, Bilder, GEN0009. The study of varieties and hybrids was conducted in two experiments: on the background of two forecrops (complete fallow and spring wheat); by seeding rates (2.0; 2.5 and 3.0 million germinated seeds/ha). The 2019-2021 results show that the degree of infestation depended on the characteristics of the variety or hybrid. It was found that in the experiment on the forecrops the crops of spring rape on complete fallow were slightly cleaner. Due to the implemented agrotechnics, complete fallow allows you to clean the soil from weeds and accumulate moisture in the root layer, but statistically significant differences were not detected. The cleanest crops were the variety Maikudyk (2.6%) and the hybrid Bilder (2.8%). In the second experiment, it was found that increasing seeding rates from 2.0 to 3.0 million germinated seeds/ha led to a gradual decrease in weediness. The variety Maikudyk (degree of weeding 13.9%) and the hybrid Bilder (14.7%) had the lowest weediness in this experiment.
17

Shortlidge, C. C. "Control System for a 373 kW, Intercooled, Two-Spool Gas Turbine Engine Powering a Hybrid Electric World Sports Car Class Vehicle." Journal of Engineering for Gas Turbines and Power 120, no. 1 (January 1, 1998): 84–88. http://dx.doi.org/10.1115/1.2818091.

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SatCon Technology Corporation has completed design, fabrication, and the first round of test of a 373 kW (500 hp), two-spool, intercooled gas turbine engine with integral induction type alternators. This turbine alternator is the prime mover for a World Sports Car class hybrid electric vehicle under development by Chrysler Corporation. The complete hybrid electric vehicle propulsion system features the 373 kW (500 hp) turbine alternator unit, a 373 kW (500 hp) 3.25 kW-h (4.36 hp-h) flywheel, a 559 kW (750 hp) traction motor, and the propulsion system control system. This paper presents and discusses the major attributes of the control system associated with the turbine alternator unit. Also discussed is the role and operational requirements of the turbine alternator unit as part of the complete hybrid electric vehicle propulsion system.
18

Orr, H. Allen, Laurence D. Madden, Jerry A. Coyne, Renee Goodwin, and R. Scott Hawley. "The Developmental Genetics of Hybrid Inviability: A Mitotic Defect in Drosophila Hybrids." Genetics 145, no. 4 (April 1, 1997): 1031–40. http://dx.doi.org/10.1093/genetics/145.4.1031.

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We report studies of the developmental basis of hybrid inviability in the Drosophila melanogaster complex. The pathology of these hybrids closely resembles that of mitotic mutants in D. melanogaster. We use mosaic and cytological analyses to show that hybrid male inviability is associated with, and probably caused by, a defect in mitotic cell division. In the mosaic study, we find that male clones produced in otherwise female hybrids are not cell lethal but are very small, probably reflecting defects in mitotic proliferation. Cytological inspection of larval neuroblasts reveals a profound mitotic defect in hybrids: chromosomes show a near-complete failure to condense even after 2 hr of incubation in colchicine. Both the defect in clonal proliferation and in chromatin condensation are rescued by mutations known to rescue normally inviable hybrid males. We present a simple model in which hybrid inviability is partly or entirely caused by a mitotic defect; this defect is, in turn, caused by an interaction between the Hybrid male rescue (Hmr) locus of D. melanogaster and autosomal gene(s) from D. melanogaster's sister species.
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Ji, Xiu Huan. "Hybrid Synchronization of Three Identical Coupled Chaotic Systems Using the Direct Design Method." Advanced Materials Research 912-914 (April 2014): 695–99. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.695.

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This paper investigates the hybrid synchronization behavior (coexistence of anti-synchronization and complete synchronization) in three coupled chaotic systems with ring connections. We employ the direct design method to design the hybird synchronization controllers, which transform the error system into a nonlinear system with a special antisymmetric structure. A simple stability criterion is then derived for reaching hybrid synchronization. Finally, numerical example is provided to demonstrate the effectiveness of the theoretical analysis.
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Evtushenko, Elena V., Yulia A. Lipikhina, Petr I. Stepochkin, and Alexander V. Vershinin. "Cytogenetic and molecular characteristics of rye genome in octoploid triticale (× Triticosecale Wittmack)." Comparative Cytogenetics 13, no. 4 (December 16, 2019): 423–34. http://dx.doi.org/10.3897/compcytogen.v13i4.39576.

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Alloploidization resulting from remote (interspecific or intergeneric) hybridization is one of the main factors in plant evolution, leading to the formation of new species. Triticale (× Triticosecale Wittmack, 1889) is the first artificial species created by crossing wheat (Triticum spp.) and rye (Secale cereale Linnaeus, 1753) and has a great potential as a grain and forage crop. Remote hybridization is a stress factor that causes a rapid reorganization of the parental genomes in hybrid progeny (“genomic shock”) and is accompanied by abnormalities in the chromosome set of hybrids. The formation of the hybrid genome and its subsequent stabilization are directly related to the normalization of meiosis and the correct chromosome segregation. The aim of this work was to cytogenetically characterize triticale (× Triticosecale rimpaui Wittmack, 1899, AABBDDRR) obtained by crossing Triticum aestivum Linnaeus, 1753. Triple Dirk D × Secale cereale L. Korotkostebel’naya 69 in F3–F6 generations of hybrids, and to trace the process of genetic stabilization of hybrid genomes. Also, a comparative analysis of the nucleotide sequences of the centromeric histone CENH3 genes was performed in wheat-rye allopolyploids of various ploidy as well as their parental forms. In the hybrid genomes of octoploid triticale an increased expression of the rye CENH3 variants was detected. The octoploid triticale plants contain complete chromosome sets of the parental subgenomes maintaining the chromosome balance and meiotic stability. For three generations the percentage of aneuploids in the progeny of such plants has been gradually decreasing, and they maintain a complete set of the paternal rye chromosomes. However, the emergence of hexaploid and new aneuploid plants in F5 and F6 generations indicates that stabilization of the hybrid genome is not complete yet. This conclusion was confirmed by the analysis of morphological features in hybrid plants: the progeny of one plant having the whole chromosome sets of parental subgenomes showed significant morphological variations in awn length and spike density. Thus, we expect that the results of our karyotyping of octoploid triticales obtained by crossing hexaploid wheat to diploid rye supplemented by comparative analysis of CENH3 sequences will be applicable to targeted breeding of stable octo- and hexaploid hybrids.
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Hairmansis, A., Hajrial Aswidinnoor, Trikoesoemaningtyas Trikoesoemaningtyas, and Suwarno Suwarno. "IDENTIFICATION OF WIDE COMPATIBILITY VARIETIES IN SOME TROPICAL JAPONICA RICE." Indonesian Journal of Agricultural Science 6, no. 1 (July 23, 2013): 28. http://dx.doi.org/10.21082/ijas.v6n1.2005.28-31.

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The F1 hybrid sterility in indica/japonica crosses is the major barrier in developing hybrid rice varieties between these two diverse germplasm. The sterility problem in japonica/indica hybrids can be overcome by using wide compatibility genes. The objective of this study was to identify wide compatibility varieties (WCVs) in some tropical japonica rice. Twenty five tropical japonica varieties as male parents were crossed with indica (IR64) and japonica (Akitakomachi) testers as female parents. The crosses were planted following a randomized complete block design with three replications. Varieties having average spikelet fertility of more than 70% with both the indica and japonica testers were rated as WCVs. Result from this study showed that six tropical japonica varieties were classified as WCVs, i.e., Cabacu, Grogol, Kencana Bali, Klemas, Lampung Lawer, and Napa. Hybrid sterility is caused by partial sterility of male and female gametes. The WCVs from the present study can be used in hybrid rice breeding program to solve hybrid sterility in indica/japonica hybrids.
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Hairmansis, A., Hajrial Aswidinnoor, Trikoesoemaningtyas Trikoesoemaningtyas, and Suwarno Suwarno. "IDENTIFICATION OF WIDE COMPATIBILITY VARIETIES IN SOME TROPICAL JAPONICA RICE." Indonesian Journal of Agricultural Science 6, no. 1 (July 23, 2013): 28. http://dx.doi.org/10.21082/ijas.v6n1.2005.p28-31.

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The F1 hybrid sterility in indica/japonica crosses is the major barrier in developing hybrid rice varieties between these two diverse germplasm. The sterility problem in japonica/indica hybrids can be overcome by using wide compatibility genes. The objective of this study was to identify wide compatibility varieties (WCVs) in some tropical japonica rice. Twenty five tropical japonica varieties as male parents were crossed with indica (IR64) and japonica (Akitakomachi) testers as female parents. The crosses were planted following a randomized complete block design with three replications. Varieties having average spikelet fertility of more than 70% with both the indica and japonica testers were rated as WCVs. Result from this study showed that six tropical japonica varieties were classified as WCVs, i.e., Cabacu, Grogol, Kencana Bali, Klemas, Lampung Lawer, and Napa. Hybrid sterility is caused by partial sterility of male and female gametes. The WCVs from the present study can be used in hybrid rice breeding program to solve hybrid sterility in indica/japonica hybrids.
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Oliveira, Sara I. de, Elba H. Ribeiro, Nádia F. Moreira, Larissa S. Vianna, and Telma NS Pereira. "Meiotic behavior and fertility of Capsicum interspecific hybrids." Horticultura Brasileira 38, no. 4 (December 2020): 382–86. http://dx.doi.org/10.1590/s0102-0536202004007.

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ABSTRACT This study was performed to evaluate the meiotic behavior and fertility of four hybrids obtained from the crossing of Capsicum baccatum and its botanical forms with Capsicum chinense and Capsicum frutescens. We aimed to identify the causes of the low fertility in interspecific hybrids involving species from different gene pools of Capsicum. Hybrid flower buds were fixed in fixative solution and the slides were prepared using 1%-acetic carmine solution. Meiosis was observed in all phases and the main meiotic abnormality observed was the complete or partial lack of chromosome pairing, indicating that the species are either genetically distant or that some asynaptic gene was present in the hybrids. Meiotic index (MI), the frequency of unreduced gametes (type 2n), and pollen viability were estimated. MI and pollen viability of the hybrids were low. We concluded that due to the complete or partial lack of chromosome pairing, the species used in the hybrid combinations are genetically distant. We also noticed that the low-fertility hybrids are a consequence of the lack of chromosome homology between the two genomes involved. The hybrids were considered partially sterile since their pollen viability percentage was lower than 50%.
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GÉRARD, PIERRE R., and DAVEN C. PRESGRAVES. "Abundant genetic variability in Drosophila simulans for hybrid female lethality in interspecific crosses to Drosophila melanogaster." Genetics Research 94, no. 1 (February 2012): 1–7. http://dx.doi.org/10.1017/s0016672312000031.

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SummaryIntrinsic postzygotic reproductive isolation is thought to result from the substitution of multiple harmless or beneficial genetic differences between species that are incidentally deleterious when combined in species hybrids, causing hybrid sterility or inviability. Genetic variability for hybrid sterility or inviability phenotypes is, however, rarely assessed in natural populations. Here, we assess variation for Drosophila simulans-encoded maternal factor(s) that cause lethality in D. simulans–Drosophila melanogaster F1 hybrid females. First, we survey genetic variability in the strength of D. simulans-mediated maternal effect hybrid lethality among 37 geographic and laboratory isolates. We find abundant variability in the strength of maternal effect hybrid lethality, ranging from complete lethality to none. Second, we assess maternal effect hybrid lethality for a subset of wild isolates made heterozygous with two so-called hybrid rescue strains. The results suggest that the D. simulans maternal effect hybrid lethality involves a diversity of alleles and/or multiple loci.
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Chen, Honglin, Shawn A. Mehlenbacher, and David C. Smith. "Hazelnut Accessions Provide New Sources of Resistance to Eastern Filbert Blight." HortScience 42, no. 3 (June 2007): 466–69. http://dx.doi.org/10.21273/hortsci.42.3.466.

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A diverse collection of 58 hazelnut accessions, including Corylus avellana L. and interspecific hybrids, were evaluated for their response to the eastern filbert blight pathogen Anisogramma anomala (Peck) E. Müller after greenhouse inoculation. Evaluations were made using enzyme-linked immunosorbent assay and visual inspection. Forty-five of these became infected, 12 remained free of infection, and one gave inconclusive results. The 12 accessions showing complete resistance were European hazelnuts ‘Culpla’ from Spain and CCOR 187 from Finland; C. americana × C. avellana hybrids ‘G081S’, CCOR 506, and Weschcke selections TP1, TP2 and TP3; C. colurna × C. avellana hybrids Chinese Trazels Gellatly #6 and #11; Turkish Trazel Gellatly #3 and backcross hybrid ‘Lisa’; and C. heterophylla var. sutchuensis × C. avellana hybrid ‘Estrella #1’. In a second test, exposure of potted trees under structures topped with diseased wood confirmed the complete resistance of ‘Santiam’, four pollinizers, and ‘Ratoli’. However, a few small cankers were observed on ‘Closca Molla’ from Spain and OSU 729.012, with resistance from C. californica (A.DC.) Rose, in contrast to the results of earlier greenhouse inoculations.
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Bai, Samita, and Shakeel A. Khoja. "Hybrid Query Execution on Linked Data With Complete Results." International Journal on Semantic Web and Information Systems 17, no. 1 (January 2021): 25–49. http://dx.doi.org/10.4018/ijswis.2021010102.

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The link traversal strategies to query Linked Data over WWW can retrieve up-to-date results using a recursive URI lookup process in real-time. The downside of this approach comes with the query patterns having subject unbound (i.e. ?S rdf:type:Class). Such queries fail to start up the traversal process as the RDF pages are subject-centric in nature. Thus, zero-knowledge link traversal leads to the empty query results for these queries. In this paper, the authors analyze a large corpus of real-world SPARQL query logs and identify the Most Frequent Predicates (MFPs) occurring in these queries. The knowledge of these MFPs helps in finding and indexing a limited number of triples from the original data set. Additionally, the authors propose a Hybrid Query Execution (HQE) approach to execute the queries over this index for initial data source selection followed by link traversal process to fetch complete results. The evaluation of HQE on the latest real data benchmarks reveals that it retrieves at least five times more results than the existing approaches.
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Franco, Jefferson Honorio, Matteo Grattieri, Adalgisa R. de Andrade, and Shelley D. Minteer. "Unveiling complete lactate oxidation through a hybrid catalytic cascade." Electrochimica Acta 376 (April 2021): 138044. http://dx.doi.org/10.1016/j.electacta.2021.138044.

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Marchenko, V. M. "On the complete controllability of hybrid differential-difference systems." Differential Equations 52, no. 12 (December 2016): 1624–37. http://dx.doi.org/10.1134/s0012266116120090.

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Kong, Tom, and Daniel C. H. Yang. "A Hybrid Parametric Interpolator for Complete Motion Profile Generation." Computer-Aided Design and Applications 2, no. 1-4 (January 2005): 105–14. http://dx.doi.org/10.1080/16864360.2005.10738358.

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Marchenko, V. M. "On the complete observability of hybrid differential-difference systems." Doklady Mathematics 84, no. 3 (December 2011): 891–94. http://dx.doi.org/10.1134/s1064562411070118.

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Tulu, Dufera, Tefera Kumsa, Zeleke Keimeso, and Demissew Abakemal. "Evaluation of Promising Highland Maize Genotypes in Highland Districts of Western Shewa Zone, Ethiopia." EAS Journal of Biotechnology and Genetics 4, no. 3 (May 21, 2022): 31–35. http://dx.doi.org/10.36349/easjbg.2022.v04i03.001.

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The on-farm trials were conducted in three districts of west shewa zene, Oromia region, Ethiopia, to compare the performance of Promising hybrids under farmers field and promote one or two hybrids for possible release as commercial variety. Seven hybrids were evaluated using randomized complete block design (RCBD) in 2021 cropping season. The combined analysis of variance for three districts showed highly significant mean squares due to genotypes for all studied traits except ear position. Site*entry interaction showed significant mean variance only for grain yield (GY) indicating that, the performance of these genotypes were not consistent across sites for this trait. Hybrids SXH180174 and 3XH1900432 were the best performing genotypes for grain yield and some yield related traits. The single cross hybrid SXH180174 scored the highest grain yield (10.05 tons/ha) as compared to the checks and showed preferred plant and ear aspects. Accordingly this hybrid was recommended for variety verification trial stage for release as commercial hybrid in highland agro-ecology of the country.
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Alba, V., G. B. Polignano, C. Montemurro, W. Sabetta, V. Bisignano, M. Turi, S. Ravaglia, et al. "Similarity Patterns and Stability of Environmental Response in Sunflower Hybrids." International Journal of Agronomy 2010 (2010): 1–9. http://dx.doi.org/10.1155/2010/637928.

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The rationale for the following research was to analyse the response of sunflower hybrids to different sowing dates and to evaluate hybrid response to critical environmental conditions. The data used are from an experiment conducted in a location-year combination over a period of two years (2007–09) in southern Italy. Eleven hybrids were tested following a randomized complete block design with three replications at each location-year combination. Eight agronomic characters including seed oil content were recorded. Classification and ordination procedures were used to investigate hybrid performance in relation to three different sowing dates. Combined analysis of variance showed that hybrids, location-year combination, sowing date and their interactions were highly significant for all characters. Hybrid performances were classified by cluster analysis into groups that were differentiable in terms of means and stability. The first three components accounted for 74%, 82%, and 87% of the total variation for the first, second and third sowing date respectively. Plotting component one against component two along Euclidean axes should therefore provide a reasonable representation of the spatial arrangements of hybrid performances in the original multi-dimensional space. The applied statistical method gives full information on hybrid performances similarity.
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López-Rodríguez, Daniel, Bàrbara Micó-Vicent, Jorge Jordán-Núñez, Ignacio Montava-Seguí, and Eva Bou-Belda. "Complete Desorption of Hybrid Nanoclays Composed of Hydrotalcite and Disperse Dye." International Journal of Molecular Sciences 24, no. 13 (June 30, 2023): 10950. http://dx.doi.org/10.3390/ijms241310950.

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Clays are considered great nanoadsorbents for many materials, including textile dyes. The use of these materials for cleaning textile wastewater is well known; however, it is not at all common to find applications for the hybrid materials formed from the clay and dye. In this work, a dye-loaded clay material was used to make new dye baths and colour a polyester textile substrate. The same hybrid could be used several times as it did not use all the adsorbed dye in a single dyeing. The hybrid obtained from hydrotalcite (nanoclay) and the dispersed red 1 dye was analysed by measuring the colour obtained, carrying out an X-ray diffraction analysis that provided information after each desorption–dyeing process, and using infrared spectroscopy to analyse the specific bands of each characteristic group. Both analyses showed that the amount of dye present in the hybrid decreases. Thermogravimetry (TGA), surface area and porosity measurements (BET), and X-ray photoelectron spectroscopy (XPS) tests were conducted. Chemical stability was assessed by subjecting the hybrid to the actions of different reagents. In addition, colour fastness tests were carried out after dyeing and washing the polyester test tubes to check for the correct fixing of the dye to the fibre. These fastness results showed that the dyeing was carried out correctly and as if it was a conventional dyeing process.
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Cao, Wenting, Melkamu Teshome Ayana, and Rongwei Gao. "Hybrid Resource Environmental Value Chain Model Based on a Discrete Time Algorithm." Wireless Communications and Mobile Computing 2021 (June 15, 2021): 1–11. http://dx.doi.org/10.1155/2021/9993833.

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Due to the inconsistency between resource environment and value data types, the hybrid model of resource environment value chain cannot effectively coordinate the relationship among resources, environment, and value chain. The circulation of resource chain, ecological chain, and value chain is not completed independently; they are intertwined and promote each other. Therefore, this paper proposes a hybrid resource environmental value chain model based on a discrete time algorithm. Analyze the hybrid internal structure of resource chain, environment chain, and value chain model; integrate the natural resource information through the objective function of natural resource integration; obtain the indicators affecting the environment; and complete the analysis of the characteristics of environmental change. On this basis, the relationship between resources, environment, and economic value is analyzed, and the hybrid content of resources, environment, and value chain is determined. The discrete-time algorithm is introduced to transform the hybrid content into the same data format, obtain the objective function and constraints of the resource environment value chain hybrid model, and complete the construction of the resource environment value chain hybrid model based on the discrete-time algorithm. The simulation results show that the hybrid model designed in this paper can effectively improve the resource saving rate, up to 97%, and the error of resource environment value chain data fusion is the lowest, and the time is less than 1 min which was a considerable achievement.
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Orr, H. Allen, and Shannon Irving. "Complex Epistasis and the Genetic Basis of Hybrid Sterility in the Drosophila pseudoobscura Bogota-USA Hybridization." Genetics 158, no. 3 (July 1, 2001): 1089–100. http://dx.doi.org/10.1093/genetics/158.3.1089.

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Abstract We analyzed the genetic basis of postzygotic isolation between the Bogota and USA subspecies of Drosophila pseudoobscura. These subspecies diverged very recently (perhaps as recently as 155,000 to 230,000 years ago) and are partially reproductively isolated: Bogota and USA show very little prezygotic isolation but form sterile F1 males in one direction of the hybridization. We dissected the basis of this hybrid sterility and reached four main conclusions. First, postzygotic isolation appears to involve a modest number of genes: we found large chromosome regions that have no effect on hybrid fertility. Second, although apparently few in number, the factors causing hybrid sterility show a remarkably complex pattern of epistatic interaction. Hybrids suffer no hybrid sterility until they carry the “right” allele (Bogota vs. USA) at at least four loci. We describe the complete pattern of interactions between all chromosome regions known to affect hybrid fertility. Third, hybrid sterility is caused mainly by X-autosomal incompatibilities. Fourth, hybrid sterility does not involve a maternal effect, despite earlier claims to the contrary. In general, our results suggest that fewer genes are required for the appearance of hybrid sterility than implied by previous studies of older pairs of Drosophila species. Indeed, a maximum likelihood analysis suggests that roughly 15 hybrid male steriles separate the Bogota and USA subspecies. Only a subset of these would act in F1 hybrids.
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Teodoro-Cerna, Elin, Eroncio Mendoza-Nieto, and Sergio Eduardo Contreras-Liza. "Grain Yield of Maize Hybrids in Response to Inoculation with Azospirillum sp. under Nitrogen Limiting Conditions in Huaura, Peru." Sustainable Agriculture Research 10, no. 1 (November 5, 2020): 1. http://dx.doi.org/10.5539/sar.v10n1p1.

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This experiment was conducted to evaluate the effect of Azospirillum sp. inoculated with different nitrogen levels (0, 60, 90, 180 kg ha-1) on grain yield, yield components and agronomic traits of hybrid maize at the arid conditions of the central coast of Peru. The experimental design used was randomized complete block design with four replications per treatment, under the arrangement of subdivided plots, in which three corn hybrids were assigned to complete plots and four inoculant-N fertilization treatments, to the subplots. The results showed that for dose fertilization of 180 kg ha-1 of nitrogen (control), the grain yield of hybrid corn was similar as compared to 60-120 kg ha-1 N fertilization inoculated at 15 and 45 days with a native strain of Azospirillum sp., suggesting that the response in grain yield for hybrid corn can be balanced with nitrogen fertilization and inoculation with Azospirillum sp. 1x108 CFU mL-1 in conditions of arid soils, with possible impact on the use of this microorganism in the maize production system
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Scotti, Ivan, Anna Mariani, Valentino Verona, Alberto Candolini, Carlo A. Cenci, and Angelo M. Olivieri. "AFLP markers and cytotaxonomic analysis reveal hybridisation in the genus Schoenus (Cyperaceae)." Genome 45, no. 2 (April 1, 2002): 222–28. http://dx.doi.org/10.1139/g01-138.

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Molecular, cytological, and morphological data support the existence of a hybrid population between Schoenus nigricans and Schoenus ferrugineus. This population was found in northeastern Italy, where S. nigricans is central with respect to its natural range and S. ferrugineus is marginal, being most common in the Alps and in central and northern Europe. Molecular marker data show that the putative hybrid population is genetically intermediate between nearby populations of the parent species. Cytological evidence confirmed the hybrid nature of this population, as does the almost complete sterility of plants within the population. Although no seeds were produced by the hybrid population, some possibly fertile pollen grains were produced; this suggests that the possibility of introgression between the two species through the hybrids cannot completely be excluded.Key words: Schoenus, AFLP markers, chromosome behaviour, introgression.
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Moradi, H., G. A. Akbari, S. Khavari Khorasani, and H. A. Ramshini. "Evaluation of drought tolerance in corn (Zea mays L.) new hybrids with using stress tolerance indices." European Journal of Sustainable Development 1, no. 3 (October 1, 2012): 543. http://dx.doi.org/10.14207/ejsd.2012.v1n3p543.

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In order to study the effect of drought stress on morphophysiologic characteristics,yield and yield components of 8 new hybrids of corn (Zea maize L.) and KSC704commercial hybrid as control resistant to drought and warm (which were bred andscreened in Khozestan province condition), an experiment was conducted in aRandomized Complete Block Design (RCBD) with three replications underdrought stress and normal irrigation at Khorasan-Razavi Agriculture ResearchCenter, Mashhad, Iran on June 10, 2011. The results of analyze variance showedthat under normal irrigation and drought condition, there was a significantdifference (p<0.01) between the hybrids. Mean comparison of hybrids revealedthat in normal irrigation H6 and in drought stress H8 hybrid had the maximumgrain yield (12.85 and 6.75 ton/ha, respectively). Based on the grain yields ofstudied hybrids, stress tolerance index (STI), stress susceptibility index (SSI),tolerance index (TOI), mean productivity (MP), geometric mean productivity(GMP), harmonic mean (HM) and golden mean (GM) were estimated. Resultsshowed that among drought tolerance indices, MP, GMP, STI and HM were thebest indices for corn and KSC704 hybrid and H4 had the highest tolerance todrought in Mashhad weather condition.
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Bocci, Federico, Mohit K. Jolly, Satyendra C. Tripathi, Mitzi Aguilar, Samir M. Hanash, Herbert Levine, and José N. Onuchic. "Numb prevents a complete epithelial–mesenchymal transition by modulating Notch signalling." Journal of The Royal Society Interface 14, no. 136 (November 2017): 20170512. http://dx.doi.org/10.1098/rsif.2017.0512.

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Epithelial–mesenchymal transition (EMT) plays key roles during embryonic development, wound healing and cancer metastasis. Cells in a partial EMT or hybrid epithelial/mesenchymal (E/M) phenotype exhibit collective cell migration, forming clusters of circulating tumour cells—the primary drivers of metastasis. Activation of cell–cell signalling pathways such as Notch fosters a partial or complete EMT, yet the mechanisms enabling cluster formation remain poorly understood. Using an integrated computational–experimental approach, we examine the role of Numb—an inhibitor of Notch intercellular signalling—in mediating EMT and clusters formation. We show via an mathematical model that Numb inhibits a full EMT by stabilizing a hybrid E/M phenotype. Consistent with this observation, knockdown of Numb in stable hybrid E/M cells H1975 results in a full EMT, thereby showing that Numb acts as a brake for a full EMT and thus behaves as a ‘phenotypic stability factor' by modulating Notch-driven EMT. By generalizing the mathematical model to a multi-cell level, Numb is predicted to alter the balance of hybrid E/M versus mesenchymal cells in clusters, potentially resulting in a higher tumour-initiation ability. Finally, Numb correlates with a worse survival in multiple independent lung and ovarian cancer datasets, hence confirming its relationship with increased cancer aggressiveness.
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FAYEUN, Lawrence, and Sayo SESAY. "Evaluation of Drought Tolerant Top Cross and Three-Way Cross Maize Hybrids for Grain Yield and Related Traits in Three Agro-Ecological Zones of Southwest Nigeria." Notulae Scientia Biologicae 11, no. 3 (September 30, 2019): 414–21. http://dx.doi.org/10.15835/nsb11310338.

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Superiority of hybrid maize cannot be overemphasized. Different types of hybrids are developed by plant breeders to improve productivity and multi-locational evaluation of these hybrids prior to release is necessary to select the best. The objectives of this study were to identify maize hybrids with superior agronomic potentials and compare the performance of top-cross and three-way cross hybrid maize varieties for grain yield and related traits under rain-fed condition in three different locations (Abeokuta, Ibadan and Akure) of Southwest Nigeria. The study consisted of ten hybrids each of top-cross and three-way cross hybrid varieties, tested with two checks. At each location, the experiment was laid out in randomised complete block design with three replications. The results showed that effects of locations, genotypes and genotype x location interactions were highly significant (p<0.01) for all the traits evaluated. Significant differences were also revealed between the top-cross and three-way cross hybrids for all the traits evaluated except days to 50% tasseling, ear diameter and 100-grain weight. The top-cross hybrids were superior over the three-way cross hybrids for grain yield by 5.25%. The hybrids ‘M0926-7’, ‘M0926-8’, ‘M1026-11’, ‘M1026-3’, ‘M1226-2’ (top-cross hybrids), ‘M1124-24’, ‘M1124-27’, ‘M1124-31’, ‘M1227-6’ and ‘M1227-7’ (three-way cross hybrids) showed highest stable yields across the three locations. Hybrids ‘M0926-7’ (top-cross hybrid) and ‘M1124-24’ (three-way cross hybrid) that expressed early flowering with higher grain yield are recommended for drought stress prone areas because of their abilities to tolerate drought through escape.
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Bopp, V. L., N. L. Kurachenko, A. N. Khalinskiy, A. A. Churakov, and D. N. Stupnitskiy. "Seed productivity of rapeseed hybrid." Bulletin of NSAU (Novosibirsk State Agrarian University), no. 4 (February 8, 2022): 6–16. http://dx.doi.org/10.31677/2072-6724-2021-61-4-6-16.

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The authors cited the results of studying the seed productivity of rape hybrids of German selection in the soil and climatic conditions of the Krasnoyarsk forest-steppe. The studies were conducted at the experimental plot of the Borsky educational and experimental-production complex of the Krasnoyarsk State Agrarian University (in 2018-2019). The weather conditions of the observation period differed from multi-year data. In 2018, acutely dry conditions were recorded against elevated temperatures from May to August. In 2019, the authors observed a highly uneven rainfall distribution during the growing season. Lack of moisture was noted in May and July 2019; temperatures exceeded the climatic norm all season. A comparative evaluation of the following F1 rapeseed hybrids is presented: Salsa KL, Cultus KL, Currie KL and Lumen. The results of the two-year research showed that the best preservation of plants for harvesting was observed for hybrid Lumen 93.2%, the lowest indicator for F1 Salsa KL was 78.1% of plants preserved. The ability to produce fruit is higher in the Salsa CL hybrid, with an average of 202 pods per plant over two years of observation. The other hybrids had fewer generative pods, ranging from 139 pods in the Currie KL hybrid to 149 in the Lumen hybrid. The highest fruit number was observed for the Currie CL hybrid (31-32 seeds per pod) in each year of the study (the threshold value for spring rapeseed is 40 seeds). Less than in other hybrids, the Lumen hybrid had 22-24 origins in a pod. The authors revealed that the number of seeds in the pod is influenced more by the combination’s genotype than by the pollination period’s weather conditions. The weight of 1000 seeds in spring rape, depending on the hybrid’s biological characteristics and the growing season’s weather conditions, can be 3-5 grams. The complete grains were formed in hybrid Lumen on average for two years of observation weight of 1000 grains was 3.9 g, the smallest seeds in hybrid Kultus KL 3.2 g. All the studied hybrids of spring rape are highly productive. F1 Currie KL was the most effective in oilseed yield, averaging 7.22 t/ha over the study period.
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Ip, Y. T., R. E. Fournier, and R. Chalkley. "Extinction of phosphoenolpyruvate carboxykinase gene expression is associated with loss of a specific chromatin-binding protein from a far upstream domain." Molecular and Cellular Biology 10, no. 7 (July 1990): 3782–87. http://dx.doi.org/10.1128/mcb.10.7.3782-3787.1990.

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We have analyzed the chromatin structure of the phosphoenolpyruvate carboxykinase (PEPCK) gene in hepatoma x fibroblast hybrids with different extinction phenotypes. These hybrids included a karyotypically complete hybrid in which all liver gene activity was extinguished, a microcell hybrid that contained a single mouse chromosome 11 and in which PEPCK gene activity was decreased but inducible by cyclic AMP, and a segregant line that had lost all mouse chromosomes and in which the PEPCK gene was reexpressed. We found that only in the completely extinguished hybrid was PEPCK chromatin structure radically different from that in the parental hepatoma cells. In this hybrid, there was no evidence of any factors binding to the promoter or to the upstream hypersensitive site at -4800 base pairs. In the other cell lines, even when PEPCK gene transcription was low, the PEPCK chromatin showed characteristic structures typical of a transcriptionally competent gene, with hypersensitive sites at positions previously described. Loss of the upstream hypersensitive site was also shown to be correlated with the absence of a liver-specific protein factor that binds specifically to the upstream region.
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Ip, Y. T., R. E. Fournier, and R. Chalkley. "Extinction of phosphoenolpyruvate carboxykinase gene expression is associated with loss of a specific chromatin-binding protein from a far upstream domain." Molecular and Cellular Biology 10, no. 7 (July 1990): 3782–87. http://dx.doi.org/10.1128/mcb.10.7.3782.

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We have analyzed the chromatin structure of the phosphoenolpyruvate carboxykinase (PEPCK) gene in hepatoma x fibroblast hybrids with different extinction phenotypes. These hybrids included a karyotypically complete hybrid in which all liver gene activity was extinguished, a microcell hybrid that contained a single mouse chromosome 11 and in which PEPCK gene activity was decreased but inducible by cyclic AMP, and a segregant line that had lost all mouse chromosomes and in which the PEPCK gene was reexpressed. We found that only in the completely extinguished hybrid was PEPCK chromatin structure radically different from that in the parental hepatoma cells. In this hybrid, there was no evidence of any factors binding to the promoter or to the upstream hypersensitive site at -4800 base pairs. In the other cell lines, even when PEPCK gene transcription was low, the PEPCK chromatin showed characteristic structures typical of a transcriptionally competent gene, with hypersensitive sites at positions previously described. Loss of the upstream hypersensitive site was also shown to be correlated with the absence of a liver-specific protein factor that binds specifically to the upstream region.
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Mousavi, Seyed Mohammad Nasir, Csaba Bojtor, Árpád Illés, and János Nagy. "Genotype by Trait Interaction (GT) in Maize Hybrids on Complete Fertilizer." Plants 10, no. 11 (November 5, 2021): 2388. http://dx.doi.org/10.3390/plants10112388.

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We investigated the interaction between genotype by trait, and an experiment was conducted at the University of Debrecen. Two maize cultivars, FAO340 and FAO410, were studied in a randomized complete block design with four replications. This experiment was applied to the six fertilization treatments. Fertilizer levels were NPK0 (control) (N:0, P2O5:0, K2O:0), NPK1 (N:30, P2O5:23, K2O:27), NPK2 (N:60, P2O5:46, K2O:54), NPK3 (N:90, P2O5:69, K2O:81), NPK4 (N:120, P2O5:92, K2O:108), and NPK5 (N:150, P2O5:115, K2O:135). The first principal component showed 54.24%, and the second principal component showed 20.75%, which explained the total squares interaction using the AMMI model in the case of the FAO410 hybrid. As regards the FAO340 hybrid, the first principal component showed 58.18%, and the second principal component showed 18.04%, explaining the total squares interaction using the AMMI model in the FAO410 hybrid. In the GGE biplot on FAO410, the first and the second principal components covered 91.20% of the total data in this analysis. Accordingly, the desirable treatment was NPK5, followed by NPK4, NPK2, NPK3, NPK1, and NPK0. NPK4 and NPK5 had the most desirable treatments for the number of seeds per row, chlorophyll, weight of 1000 seeds, and stem diameter in the case of the FAO410 hybrid.
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Toews, David P. L., Gunnar R. Kramer, Andrew W. Jones, Courtney L. Brennan, Benjamin E. Cloud, David E. Andersen, Irby J. Lovette, and Henry Streby. "Genomic identification of intergeneric hybrids in New World wood-warblers (Aves: Parulidae)." Biological Journal of the Linnean Society 131, no. 1 (July 31, 2020): 183–91. http://dx.doi.org/10.1093/biolinnean/blaa085.

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Abstract The documentation of hybrids between distantly related taxa can illustrate an initial step to explain how genes might move between species that do not exhibit complete reproductive isolation. In birds, some of the most phylogenetically distant hybrid combinations occur between genera. Traditionally, morphological and plumage characters have been used to assign the identity of the parental species of a putative hybrid, although recently, nuclear introns also have been used. Here, we demonstrate how high-throughput short-read DNA sequence data can be used to identify the parentage of a putative intergeneric hybrid, in this case between a blue-winged warbler (Vermivora cyanoptera) and a cerulean warbler (Setophaga cerulea). This hybrid had mitochondrial DNA of a cerulean warbler, indicating the maternal parent. For hundreds of single nucleotide polymorphisms within six regions of the nuclear genome that differentiate blue-winged warblers and golden-winged warblers (Vermivora chrysoptera), the hybrid had roughly equal ancestry assignment to blue-winged and cerulean warblers, suggesting a blue-winged warbler as the paternal parent species and demonstrating that this was a first generation (F1) hybrid between these species. Unlike other recently characterized intergeneric warbler hybrids, this individual hybrid learned to song match its maternal parent species, suggesting that it might have been the result of an extra-pair mating and raised in a cerulean warbler nest.
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Liénard, Marjorie A., Luciana O. Araripe, and Daniel L. Hartl. "Neighboring genes for DNA-binding proteins rescue male sterility in Drosophila hybrids." Proceedings of the National Academy of Sciences 113, no. 29 (June 29, 2016): E4200—E4207. http://dx.doi.org/10.1073/pnas.1608337113.

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Crosses between closely related animal species often result in male hybrids that are sterile, and the molecular and functional basis of genetic factors for hybrid male sterility is of great interest. Here, we report a molecular and functional analysis of HMS1, a region of 9.2 kb in chromosome 3 of Drosophila mauritiana, which results in virtually complete hybrid male sterility when homozygous in the genetic background of sibling species Drosophila simulans. The HMS1 region contains two strong candidate genes for the genetic incompatibility, agt and Taf1. Both encode unrelated DNA-binding proteins, agt for an alkyl-cysteine-S-alkyltransferase and Taf1 for a subunit of transcription factor TFIID that serves as a multifunctional transcriptional regulator. The contribution of each gene to hybrid male sterility was assessed by means of germ-line transformation, with constructs containing complete agt and Taf1 genomic sequences as well as various chimeric constructs. Both agt and Taf1 contribute about equally to HMS1 hybrid male sterility. Transgenes containing either locus rescue sterility in about one-half of the males, and among fertile males the number of offspring is in the normal range. This finding suggests compensatory proliferation of the rescued, nondysfunctional germ cells. Results with chimeric transgenes imply that the hybrid incompatibilities result from interactions among nucleotide differences residing along both agt and Taf1. Our results challenge a number of preliminary generalizations about the molecular and functional basis of hybrid male sterility, and strongly reinforce the role of DNA-binding proteins as a class of genes contributing to the maintenance of postzygotic reproductive isolation.
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Saleem, Muhammad Ahmad, Shazma Anwar, Muhammad Yasir Khan, Abdul Samad Saleem, Muhammad Shahzad Khan, Shafi Ur Rahman, Laiba Khattak, et al. "A Comparative Analysis of Local Maize Hybrids, Versus Commercial Maize Hybrids: Assessing Yield and Yield Components." International Journal of Sustainability in Research 2, no. 1 (January 27, 2024): 133–46. http://dx.doi.org/10.59890/ijsr.v2i1.954.

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Genetic variability is an important factor for genotype selection in order to increase yield. A field experiment was conducted on “A comparative analysis of local maize hybrids, versus commercial maize hybrids: Assessing yield and yield components” was carried out at Cereal Crops Research Institute (CCRI) Pirsabak Nowshera during 2022, to check the performance of forty maize hybrids i.e., CHTW-1 to CHTW-40 along 2 checks (CS-220 and P30K08). Randomized complete block design (RCBD) was used with 3 replications. Two rows of each hybrid, each measuring five meters, were planted. The row-to-row and plant-to-plant distance maintained was 75 cm and 25 cm respectively. The seed rate used was 25 kg ha-1. Statistical analysis of the data showed that maximum days to tasseling (60.67 days) were taken by check hybrid CS-220 while minimum days to tasseling (50 days) was noted in candidate hybrids CHTW-2 and CHTW-20. From the results it is concluded and recommended that the candidate hybrid CHTW-11 should be purchased and sown by the farmers as this is the finest, high yielding and cheaper as compared to other maize hybrids available in the market.
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Huynh, Tuan Q. "Evaluation of the specific combining ability (SCA) for yield and brix of seven Cucumis melo. L inbred lines of the sixth generation." Journal of Agriculture and Development 20, no. 02 (April 29, 2021): 1–9. http://dx.doi.org/10.52997/jad.1.02.2021.

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The objective of the experiment was to screen Cucumis melo L. inbred lines for high potential general combining ability and potential hybrids combinations for F1 hybridization. The experiment was conducted as a randomized complete block design (RCBD) with 29 treatments [21 hybrid combinations, control (TL3 hybrid) and seven Cucumis melo L. inbred lines I6], each with three replicates. Estimating the specific combining ability (SCA) of Cucumis melo L. inbred lines for breeding of F1 hybrid cultivars was carried out at the Research and Development Center for Hi-tech Agriculture in Ho Chi Minh City. Based on the specific combining ability of yield trait and total soluble solids (Brix) content of 21 hybrid lines from seven inbred lines following diallel method (Griffing 4 model), four potential hybrid lines (H41.6 x H58.6, H53.6 x H77.6, H32.6 x H41.6 and H53.6 x H58.6) yielded 10% higher than the control variety and gave fruits of oval shape, even fruit-net and low diseases infection.
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Koirala, KB, MP Tripathi, K. Seetharam, MT Vinayan, and PH Zaidi. "Field Evaluation of Heat Stress-Resilient Maize Hybrids for Improved and Stable Maize Production in Nepal." SAARC Journal of Agriculture 19, no. 1 (July 11, 2021): 27–43. http://dx.doi.org/10.3329/sja.v19i1.54776.

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Abstract:
In recent years, National Maize Research Program (NMRP) aimed a paradigm shift from open-pollinated varieties (OPVs) towards hybrid maize to achieve self-sufficiency in maize for food, feed, and hybrid seed within the country. In this mission, it is necessary to identify and deploy high-yielding stress-resilient maize hybrids that can cope with climate change effects, including heat stress. Under the project “Heat Tolerant Maize for Asia (HTMA)”, NMRP introduced the hybrids that performed better in previous years in different environments from International Maize and Wheat Improvement Center (CIMMYT) Hyderabad for multilocation on-farm testing. Fifteen genotypes were evaluated at two locations, two sites in Madi, Chitwan, and one in Ghorahi, Dang, along with Rampur Hybrid-8 as a heat-tolerant check, and RML-86/RML-96 and RML-95/RML-96 as normal checks. Randomized complete block design (RCBD) was used with three replicates during the spring of 2016/17. Likewise, another 20 and 18 promising hybrids were demonstrated during the winter of 2016/17 and 2017/18, respectively, in different hybrid growing pockets considering a site – a replication. Grain yield and yield attributing traits at all locations were recorded. From the across-site data analysis, selected heat-tolerant hybrids from the experiment were CAH1432, ZH15405, ZH141592, and CAH1715 which were statistically at par with promising normal hybrid RML-86/RML-96 and superior to already released heat-tolerant Rampur Hybrid-8. In 2016/17, ZH138098, ZH1620, and VH121062 were farmers’ preferred heat-tolerant hybrids. In 2017/18, Rampur Hybrid-10, ZH141592, CAH1715, and ZH15440 were preferred by farmers. The selected bestbet are taken forward for official release/registration followed by commercialization through a public-private partnership with Nepali seed companies/cooperatives. SAARC J. Agric., 19(1): 27-43 (2021)
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Greenleaf, Abigail R., Aliou Gadiaga, Yoonjoung Choi, Georges Guiella, Shani Turke, Noelle Battle, Saifuddin Ahmed, and Caroline Moreau. "Automated and Interviewer-Administered Mobile Phone Surveys in Burkina Faso: Sociodemographic Differences Among Female Mobile Phone Survey Respondents and Nonrespondents." JMIR mHealth and uHealth 8, no. 7 (July 14, 2020): e17891. http://dx.doi.org/10.2196/17891.

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Background The remarkable growth of cell phone ownership in low- and middle-income countries has generated significant interest in using cell phones for conducting surveys through computer-assisted telephone interviews, live interviewer-administered surveys, or automated surveys (ie, interactive voice response). Objective This study aimed to compare, by mode, the sociodemographic characteristics of cell phone owners who completed a follow-up phone survey with those who did not complete the survey. Methods The study was based on a nationally representative sample of women aged 15 to 49 years who reported cell phone ownership during a household survey in Burkina Faso in 2016. Female cell phone owners were randomized to participate in a computer-assisted telephone interview or hybrid interactive voice response follow-up phone survey 11 months after baseline interviews. Completion of the phone survey was defined as participants responding to more than 50% of questions in the phone survey. We investigated sociodemographic characteristics associated with cell phone survey completion using multivariable logistic regression models, stratifying the analysis by survey mode and by directly comparing computer-assisted telephone interview and hybrid interactive voice response respondents. Results A total of 1766 women were called for the phone survey between November 5 and 17, 2017. In both the computer-assisted telephone interview and hybrid interactive voice response samples, women in urban communities and women with secondary education or higher were more likely to complete the survey than their rural and less-educated counterparts. Compared directly, women who completed the hybrid interactive voice response survey had higher odds of having a secondary education than those who completed computer-assisted telephone interviews (odds ratio 1.7, 95% CI 1.1-2.6). Conclusions In Burkina Faso, computer-assisted telephone interviews are the preferred method of conducting cell phone surveys owing to less sample distortion and a higher response rate compared with a hybrid interactive voice response survey.

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