Articles de revues : « Plainsman »

1

Rife, C. L., D. L. Auld, W. D. Stegmeier, H. D. Sunderman, W. F. Heer, D. D. Baltensperger, L. A. Nelson, D. L. Johnson, D. Bordovsky et H. C. Minor. « Registration of ‘Plainsman’ Rapeseed ». Crop Science 40, n^o 1 (janvier 2000) : 292–94. http://dx.doi.org/10.2135/cropsci2000.0006rcv.

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Fábián, A., K. Jäger et B. Barnabás. « Developmental stage dependency of the effect of drought stress on photosynthesis in winter wheat (Triticum aestivum L.) varieties ». Acta Agronomica Hungarica 61, n^o 1 (1 mars 2013) : 13–21. http://dx.doi.org/10.1556/aagr.61.2013.1.2.

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Drought stress frequently occurs in the reproductive stage of wheat, causing significant yield loss. To study the developmental stage dependency of the effect of drought stress on photosynthesis, plants of the drought-tolerant Plainsman V and sensitive Cappelle Desprez winter wheat varieties were grown in phytotron chambers and subjected to water withholding during three phenophases of reproductive development: meiosis, anthesis and early seed development (ESD).Stomatal conductance (gs) and net photosynthesis (Anet) showed similar characteristics. Meiotic-stage drought only decreased the values of Cappelle Desprez significantly. Stressed Plainsman V showed a significantly smaller reduction and better regeneration for these parameters at anthesis. The decreases in gs and Anet were similar in both varieties when drought was applied during ESD. Studies on the intercellular CO2 concentration (Ci) inflexion point implied that metabolic impairment was less typical of stressed Plainsman V than of Cappelle Desprez at meiosis and anthesis. The quantum efficiency of PSII (ΦPSII) did not decline in either genotype during meiotic-stage drought. Stressed Plainsman V showed significantly higher ΦPSII values compared to Cappelle Desprez at anthesis. During ESD, the values for stressed plants of both genotypes decreased to a similar extent.The results indicate that the effect of drought stress on photosynthesis shows developmental stage dependency during the reproductive life cycle of wheat.

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Baltensperger, D. D., L. E. Weber et L. A. Nelson. « Registration of ‘Plainsman’ Grain Amaranth ». Crop Science 32, n^o 6 (novembre 1992) : 1510–11. http://dx.doi.org/10.2135/cropsci1992.0011183x003200060047x.

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Balla, Krisztina, Szilvia Bencze, Péter Bónis, Tamás Árendás et Ottó Veisz. « Changes in the photosynthetic efficiency of winter wheat in response to abiotic stress ». Open Life Sciences 9, n^o 5 (1 mai 2014) : 519–30. http://dx.doi.org/10.2478/s11535-014-0288-z.

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AbstractThe assessment of heat and drought tolerance is of primary importance in breeding programmes designed to improve heat and drought tolerance in cereals. Three winter wheat varieties grown in controlled growth chambers were exposed to heat (H) and drought (D) stress singly and in combination (H+D). The combined effects of H and D stress were much more severe than those of individual treatments for both physiological and yield parameters during grain filling. The chlorophyll content, effective quantum yield of PSII, net assimilation rate, transpiration, stomatal conductance and intercellular CO2 concentration were greatly reduced by H, D and their interaction. Grain yield decreased to a greater extent (48.3%) in Plainsman V, averaged over the stress treatments, than in Mv Magma (67.8%) and Fatima 2 (53.7%). The least decline was found in grain number, except in Plainsman V. Mv Magma tolerated heat stress better than Fatima 2. In terms of photosynthetic activity, Plainsman V showed better drought tolerance than Mv Magma. The results showed that changes in physiological properties during stress treatment are not always associated with changes in yield parameters, so a combination of methods may be needed to give a more precise picture of the stress tolerance of wheat varieties.

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Balla, K., S. Bencze, T. Janda et O. Veisz. « Analysis of heat stress tolerance in winter wheat ». Acta Agronomica Hungarica 57, n^o 4 (1 décembre 2009) : 437–44. http://dx.doi.org/10.1556/aagr.57.2009.4.6.

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As a consequence of climate change, the incidence of extreme weather events has increased in Hungary, as elsewhere. Extremely high temperatures are the factor causing the greatest problems for agriculture and crop production. The aim was to determine the heat tolerance of two wheat varieties (Plainsman V. and Mv Magma) by measuring physiological and yield parameters under high temperature conditions (35/20°C day/night) in the phytotron. Heat stress had a substantial influence on the chlorophyll content, antioxidant enzyme activity and yield parameters of the two winter wheat varieties. Heat stress during grain filling led to a significant reduction in the yield, biomass, grain number, harvest index and thousand-kernel weight. Significant differences could be detected between the two varieties, confirming the greater heat sensitivity of Plainsman V. and the better heat tolerance of Mv Magma. The importance of the antioxidant enzyme system was demonstrated in defence against heat stress. The activity of the enzymes glutathione-Stransferase (GSH-S-Tr), ascorbate peroxidase (APx) and catalase (CAT) was enhanced in Plainsman V., and that of GSH-S-Tr and CAT in Mv Magma. The tolerance of the wheat varieties appeared to be correlated with the antioxidant level, though changes in activity were observed for different antioxidant enzymes in the two genotypes tested.

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Paul, Kenny, János Pauk, Zsuzsanna Deák, László Sass et Imre Vass. « Contrasting response of biomass and grain yield to severe drought in Cappelle Desprez and Plainsman V wheat cultivars ». PeerJ 4 (18 février 2016) : e1708. http://dx.doi.org/10.7717/peerj.1708.

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We report a case study of natural variations and correlations of some photosynthetic parameters, green biomass and grain yield in Cappelle Desprez and Plainsman V winter wheat (Triticum aestivumL.) cultivars, which are classified as being drought sensitive and tolerant, respectively. We monitored biomass accumulation from secondary leaves in the vegetative phase and grain yield from flag leaves in the grain filling period. Interestingly, we observed higher biomass production, but lower grain yield stability in the sensitive Cappelle cultivar, as compared to the tolerant Plainsman cv. Higher biomass production in the sensitive variety was correlated with enhanced water-use efficiency. Increased cyclic electron flow around PSI was also observed in the Cappelle cv. under drought stress as shown by light intensity dependence of the ratio of maximal quantum yields of Photosystem I and Photosystem II, as well by the plot of the Photosystem I electron transport rate as a function of Photosystem II electron transport rate. Higher CO2uptake rate in flag leaves of the drought-stressed Plainsman cv. during grain filling period correlates well with its higher grain yield and prolonged transpiration rate through spikes. The increase in drought factor (DFI) and performance (PI) indices calculated from variable chlorophyll fluorescence parameters of secondary leaves also showed correlation with higher biomass in the Cappelle cultivar during the biomass accumulation period. However, during the grain filling period, DFI and PI parameters of the flag leaves were higher in the tolerant Plainsman V cultivar and showed correlation with grain yield stability. Our results suggest that overall biomass and grain yield may respond differentially to drought stress in different wheat cultivars and therefore phenotyping for green biomass cannot be used as a general approach to predict grain yield. We also conclude that photosynthetic efficiency of flag and secondary leaves is correlated with grain yield and green biomass, respectively. In addition, secondary trait associated mechanisms like delayed senescence and higher water-use efficiency also contribute to biomass stability. Our studies further prove that photosynthetic parameters could be used to characterize environmental stress responses.

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Mitchell, Ken, Barbara Sapergia, Don Kerr, Geoffrey Ursell et Moira Day. « The Plainsman ; Roundup ; Talking Back ; Saskatoon Piel ». Canadian Theatre Review 79-80 (juin 1994) : 160–61. http://dx.doi.org/10.3138/ctr.79-80.024.

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It is appropriate that Coteau Books should name their new series of Saskatchewan play texts after Florence James, the noted Drama Extension worker of the 1950s. As the biographical note by Rita Deverell suggests, arts policy in Saskatchewan has always been as much about preserving and fostering community at the grassroots level as producing a good artistic product. And the fact that three of the four plays were first produced by Twenty-Fifth Street Theatre, creators of Paper Wheat, indicates the continuing role of the Saskatoon-based theatre in generating and producing original Saskatchewan work among the grassroots. Whatever wider appeal they may have, Roundup, The Plainsman, and Talking Back are plainly directed at Saskatchewan audiences first, and tend to be more celebratory or elegiac than critical and introspective in tone.

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Jäger, K. « Simultaneous water withholding and elevated temperature alters embryo and endosperm development in wheat ». Acta Agronomica Hungarica 58, n^o 1 (1 mars 2010) : 91–95. http://dx.doi.org/10.1556/aagr.58.2010.1.11.

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Drought-tolerant Plainsman V and drought-sensitive Cappelle Desprez winter wheat genotypes were subjected to heat stress at 34/24°C combined with water withholding during early seed development in order to identify the joint effect of the stressors on embryo and endosperm development. During and after five days of treatment histological observations were made on the developing kernels and compared to yield data. Combined stress shortened the duration of the grain fill. With regard to kernel abortion, thousand-kernel weight and yield per spike, Plainsman V tolerated simultaneous elevated temperature and water withdrawal better than Cappelle Desprez. As a consequence of the stress the accumulation of B-type starch granules was almost completely absent in the endosperms of the sensitive genotype. The results indicate that compared to the drought-sensitive genotype, the tolerant genotype also showed increased tolerance of simultaneous drought and heat stress.

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Farshadfar, E., M. Farshadfar et J. Sutka. « COMBINING ABILITY ANALYSIS OF DROUGHT TOLERANCE IN WHEAT OVER DIFFERENT WATER REGIMES ». Acta Agronomica Hungarica 48, n^o 4 (1 janvier 2001) : 353–61. http://dx.doi.org/10.1556/aagr.48.2000.4.5.

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To study the properties of some drought tolerance criteria and agronomic characters in wheat, an eight-parental diallel cross, excluding reciprocals, was grown in a randomized complete block design with three replications under two different water regimes (irrigated and rainfed) for two years in the College of Agriculture at Razi University, Kermanshah, Iran. High broad-sense heritability estimates were observed for harvest index, grain yield, and earliness. Additive gene action was found to be predominant for grain yield, harvest index, relative water content and chlorophyll fluorescence. The results of combining ability analysis revealed that Plainsman was the best general combiner and Plainsman × Kobomugi was the best specific combination for improving drought tolerance. The pooled analysis of variance for combining ability over rainfed conditions reflected that the GCA × environment interaction was not significant for harvest index and chlorophyll fluorescence, and the SCA × environment interaction was non-significant for relative water content and relative water loss, indicating that genes controlling osmoregulation and the other physiological traits mentioned are not affected in these varieties by different rainfed conditions and hence show static stability.

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10

Gradwohl, David Mayer. « A White-Bearded Plainsman : The Memoirs of Archaeologist W. Raymond Wood ». Annals of Iowa 71, n^o 2 (avril 2012) : 201–3. http://dx.doi.org/10.17077/0003-4827.1640.

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Gelo, D. J. « A White-Bearded Plainsman : The Memoirs of Archaeologist W. Raymond Wood ». Ethnohistory 59, n^o 3 (1 juillet 2012) : 649–51. http://dx.doi.org/10.1215/00141801-1587541.

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Parsons, Chuck. « Billy and Olive Dixon : The Plainsman and His Lady by Bill O’Neal ». Southwestern Historical Quarterly 123, n^o 4 (2020) : 473–74. http://dx.doi.org/10.1353/swh.2020.0035.

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Lowman, Al, et B. Byron Price. « Crafting a Southwestern Masterpiece : J. Evetts Haley and Charles Goodnight : Cowman & ; Plainsman ». Western Historical Quarterly 19, n^o 3 (août 1988) : 334. http://dx.doi.org/10.2307/968250.

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Miller, Fredric, Kimberly Malmquist et George Ware. « Evaluation of Asian, European, and North American Elm (Ulmus spp.) Biotypes To Feeding by Spring and Fall Cankerworms ». Journal of Environmental Horticulture 19, n^o 4 (1 décembre 2001) : 216–21. http://dx.doi.org/10.24266/0738-2898-19.4.216.

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Abstract Nearly 40 different Asian elm (Ulmus spp.) biotypes, growing at The Morton Arboretum, Lisle, IL, were evaluated in laboratory bioassays and in the field for suitability and feeding preference of the spring cankerworm Paleacrita vernata (Peck) and the fall cankerworm, Alsophila pometaria (Harris). No-choice and multiple-choice laboratory feeding studies, and field defoliation surveys revealed that U. castaneifolia, U. changii, U. chenmoui, U. davidiana, U. elongata, U. gaussenii, U. glaucescens var. lasiophylla, U. japonica, U. lamellosa, U. lanceaefolia, U. macrocarpa, U. parvifolia, U. propinqua, U. propinqua var. suberosa, U. prunifolia, U. pseudopropinqua, U. taihangshanensis, U. wallichiana, U. wilsoniana, U. wilsoniana-98, and the simple and complex hybrids U. davidiana x U. japonica, U. davidiana x U. propinqua, U. japonica x U. ‘Morton’-Accolade™, U. ‘Morton’-Accolade™ x U. japonicapumila, U. ‘Morton Glossy’-Triumph™, and U. ‘Morton Plainsman’-Vanguard™ x U. davidiana, were less suitable for larval development and pupation and less preferred by spring and fall cankerworm larvae. Ulmus americana, U. glaucescens, U. szechuanica, and the simple and complex hybrids U. davidiana x U. ‘Morton’-Accolade™, U. szechuanica x U. japonica, U. ‘Morton’-Accolade™, U. ‘Morton Red Tip’-Danada Charm™ and U. ‘Morton Plainsman’-Vanguard™ were more suitable for and more preferred by spring and fall cankerworm larvae. Rankings for larval development time were highly correlated with larval longevity, but the proportion of larvae pupating was correlated neither with larval longevity nor with larval development time. Pupal fresh weights also were correlated neither with larval longevity nor with larval development time. Mean fecal pellet weights were correlated with the proportion of larvae pupating, but were not correlated with pupal fresh weights. Ulmus chenmoui, U. glaucescens var. lasiophylla, U. lamellosa, U. macrocarpa, U. propinqua, U. prunifolia, and U. pseudopropinqua all showed medium to heavy leaf pubescence and were less suitable and less preferred by spring and fall cankerworms. Asian elms were least preferred by cankerworm larvae, followed in order of increasing preference by European and North American elms.

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Britten, Thomas A. « Comanche Jack Stilwell : Army Scout and Plainsman by Clint E. Chambers and Paul H. Carlson ». Southwestern Historical Quarterly 123, n^o 3 (2020) : 370–71. http://dx.doi.org/10.1353/swh.2020.0010.

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Brenner, David M., William G. Johnson, Christy L. Sprague, Patrick J. Tranel et Bryan G. Young. « Crop–weed hybrids are more frequent for the grain amaranth ‘Plainsman’ than for ‘D136-1’ ». Genetic Resources and Crop Evolution 60, n^o 8 (26 septembre 2013) : 2201–5. http://dx.doi.org/10.1007/s10722-013-0043-8.

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Balla, K., I. Karsai, S. Bencze et O. Veisz. « Germination ability and seedling vigour in the progeny of heat-stressed wheat plants ». Acta Agronomica Hungarica 60, n^o 4 (1 décembre 2012) : 299–308. http://dx.doi.org/10.1556/aagr.60.2012.4.1.

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Heat stress during the grain-filling period has a substantial effect on embryo development, and on the size and chemical composition of the grain. The lines of a doubled haploid population arising from a cross between a heat-sensitive (Plainsman V) and a heat-tolerant (Mv Magma) wheat variety were analysed to determine how these changes influenced the germination of kernels formed during heat stress and the initial development of the seedlings. Heat stress during the early grain development of the main spike had a significant influence on the yield components, which differed however for the main and side spikes. Considerable differences were observed in the extent to which the yield components declined in the individual lines. Averaged over the population, the germination percentage, and the shoot and root length and root number of the seedlings did not differ significantly for seed originating from heat-stressed and control plants.

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Stein, Ira S., Rollin G. Sears, R. C. Hoseney, Thomas S. Cox et Bikram S. Gill. « Chromosomal Location of Genes Influencing Grain Protein Concentration and Mixogram Properties in ‘Plainsman V’ Winter Wheat ». Crop Science 32, n^o 3 (mai 1992) : 573–80. http://dx.doi.org/10.2135/cropsci1992.0011183x003200030001x.

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Szabóová, Monika, Michal Záhorský, Ján Gažo, Jeroen Geuens, Ann Vermoesen, Els D’Hondt et Andrea Hricová. « Differences in Seed Weight, Amino Acid, Fatty Acid, Oil, and Squalene Content in γ-Irradiation-Developed and Commercial Amaranth Varieties (Amaranthus spp.) ». Plants 9, n^o 11 (22 octobre 2020) : 1412. http://dx.doi.org/10.3390/plants9111412.

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Grain amaranth is known as an alternative crop with exclusive nutritional value and health benefits. The purpose of this study was to investigate the effect of gamma irradiation on quantitative and qualitative amaranth seed traits, including 1000-seed weight, amino acids, fatty acids content, oil, and squalene yield. Two Slovak mutant varieties “Pribina” (A. cruentus) and “Zobor” (A.hypochondriacus x A. hybridus) were evaluated and compared to nonirradiated controls Ficha (A. cruentus L.) and K-433 (A. hypochondriacus x A. hybridus) and commercial varieties, Aztec (A. cruentus L.), Plainsman and Koniz (A. hypochondriacus x A. hybridus). Mutant varieties, “Pribina” and “Zobor”, showed superior 1000-seed weight performance compared to all investigated amaranth samples. The change in quantitative seed trait was accompanied by significantly higher oil and squalene content compared to commercial varieties. Moreover, significantly higher content of essential linoleic acid was detected in mutant variety “Zobor”. The present findings suggest that seeds of irradiation-derived varieties have high nutritional potential and can be used as a supplementary crop in the human diet.

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Farshadfar, E., Ghanadha, J. Sutka et M. Zahravi. « GENERATION MEAN ANALYSIS OF DROUGHT TOLERANCE IN WHEAT (TRITICUM AESTIVUM L.) ». Acta Agronomica Hungarica 49, n^o 1 (1 mai 2001) : 59–66. http://dx.doi.org/10.1556/aagr.49.2001.1.7.

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To evaluate the genetic background of quantitative criteria of drought tolerance in wheat, six generations of a cross between the varieties of Plainsman and Cappelle Desprez were grown in a randomized complete block design with three replications in the greenhouse of the College of Agriculture of the University of Tehran in 1997. Genetic variation was found for yield potential (Yp), stressed yield (Ys), excised leaf water retention (ELWR), relative water loss (RWL), relative water content (RWC) and harvest index (HI) under water stress conditions. High heterosis and heterobeltiosis were observed in the F1 hybrid for Ys, HI and spike yield index (SYI). Genetic analysis exhibited overdominance in the inheritance of Ys, RWL, ELWR, HI, biomass and SYI, while RWC and Yp were controlled by the additive type of gene action. High narrow-sense heritability estimates were shown by ELWR, biomass and SYI. The high genetic advance for ELWR, RWC, HI and SYI indicated that direct selection could be effective for these traits. The epistatic effects (additive × additive=[i] for Yp, Ys and RWL, additive × dominance=[j] for ELWR, and dominance × dominance =[l] for RWL) were found to be outstanding.

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Misra, Sanghamitra. « The sovereignty of political economy : The Garos in a pre-conquest and early conquest era ». Indian Economic & ; Social History Review 55, n^o 3 (juillet 2018) : 345–87. http://dx.doi.org/10.1177/0019464618778406.

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The article is an inquiry into the elision of an image—that of the cotton-producing Garo—in the colonial archive. It situates this inquiry within the pre- and early colonial era where it is still possible to uncover elements of the irrefutable sovereign presence of Garos in eastern India as well as of the regional economic and political system through which the Garo social being makes itself historically visible. Parsing together a narrative of the Garo political order in this period, the article will discuss the ways in which the sovereignty of a people was pivoted around the production and trade in cotton. Rescuing the image of the cotton-producing Garo from the colonial archive is also a retracing of the seamless becoming of the Garo peasant, as adept at working with the hoe as with the plough, into a cotton trader who embarked on long journeys on foot and on boats every cotton season to the lowlands. The article will also probe into the germaneness of the concept of the ‘hill/forest tribe’ with the sedentary plainsman as its oppositional image and the embedding of ethnicity in circumscribed ‘natural’ habitats in eastern India by the colonial state.

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COX, T. S., J. P. MURPHY et L. G. HARRELL. « ISOELECTRIC FOCUSING PATTERNS OF KERNEL ISOZYMES FROM 80 NORTH AMERICAN WINTER WHEAT CULTIVARS ». Canadian Journal of Plant Science 68, n^o 1 (1 janvier 1988) : 65–72. http://dx.doi.org/10.4141/cjps88-007.

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The cataloguing of wheat (Triticum aestivum L.) cultivar isozyme patterns, though a routine exercise, provides useful data for genetic and breeding studies. Isozymes of five kernel enzyme systems (β-amylase, esterases, malate dehydrogenase, superoxide dismutase, and glucose phosphate isomerase) were separated by isoelectric fosusing (IEF) for 80 North American winter wheat cultivars. No variation in malate dehydrogenase, superoxide dismutase, or glucose phosphate isomerase IEF patterns was detected. There were three groups of hard red winter wheat cultivars with esterase patterns that differed from the pattern common to all others: Arkan and Sage; Siouxland, Colt, and Pioneer 2157; and Sandy. Esterase IEF, in contrast to gliadin electrophoresis in other studies, distinguished Sage from Eagle and Larned. Four soft red winter cultivars (Compton and Adena; Florida 302; Roland) and six groups containing a total of eight hard red winter cultivars (RHS812; RHS830; Norstar; Plainsman V; TAM 105, TAM 107, and Rose; and TAM 101) had variant β-amylase patterns. Some of the esterase and β-amylase varients, produced by genes on chromosomes 3A, 3D, 4D, 5A, and possibly others, may be useful in linkage studies.Key words: Cultivar identification, electrophoresis, β-amylase, esterase, superoxide dismutase, glucose phosphate isomerase

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Balla, Krisztina, Ildikó Karsai, Tibor Kiss, Szilvia Bencze, Zoltán Bedő et Ottó Veisz. « Productivity of a doubled haploid winter wheat population under heat stress ». Open Life Sciences 7, n^o 6 (1 décembre 2012) : 1084–91. http://dx.doi.org/10.2478/s11535-012-0097-1.

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AbstractBreeding of new winter wheat cultivars with good heat tolerance requires better understanding of the genetic background of heat tolerance. In the present work the effect of heat stress on the 6th day after heading was investigated in a doubled haploid (DH) population arising from a cross between heat-sensitive (Plainsman V) and heat-tolerant (Mv Magma) cultivars. Averaged over the population, heat stress was found to result in a significant reduction in biomass, grain yield and grain number per plant, and in thousand-kernel weight (TKW) and harvest index. High temperature had the greatest effect on the grain yield, with a drop of 36.2% compared with the control. This could be attributed jointly to significant reductions in the TKW of the main ear and in the grain number of the side tillers. The relationship between the yield parameters was confirmed by the positive correlations obtained for the lines in the population. The diverse levels of heat tolerance in the different lines were confirmed by the significant differences in the reduction in the chlorophyll content (SPAD index) of the flag-leaves and in yield parameters. The changes in yield components in stress condition, however, can be still the most effective tools for heat stress evaluation.

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Lancíková, Veronika, Marián Tomka, Jana Žiarovská, Ján Gažo et Andrea Hricová. « Morphological Responses and Gene Expression of Grain Amaranth (Amaranthus spp.) Growing under Cd ». Plants 9, n^o 5 (30 avril 2020) : 572. http://dx.doi.org/10.3390/plants9050572.

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Phytoremediation efficiency depends on the ability of plants to accumulate, translocate and resist high levels of metals without symptoms of toxicity. This study was conducted to evaluate the potential of grain amaranth for remediation of soils contaminated with Cd. Three grain amaranth varieties, “Pribina” (A. cruentus), “Zobor” (A. hypochondriacus x A. hybridus) and Plainsman (A. hypochondriacus x A. hybridus) were tested under different level of Cd (0, 5, 10 and 15 mg/L) in a hydroponic experimental treatment. All could be classified as Cd excluders or Cd-hypertolerant varieties able to grow and accumulate significant amounts of Cd from the hydroponic solution, preferentially in the roots. Under the highest level of Cd exposure, qRT-PCR expression analysis of five stress-related genes was examined in above- and below-ground biomass. The results show that the Cd concentration significantly increased the mRNA level of chitinase 5 (Chit 5) in amaranth roots as the primary site of metal stress. The involvement of phytochelatin synthase (PCS1) in Cd detoxification is suggested. Based on our findings, we can conclude that variety “Pribina” is the most Cd-tolerant among three tested and can be expected to be used in the phytomanagement of Cd loaded soils as an effective phytostabiliser.

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Miller, Fredric, et George Ware. « Host Suitability of Asiatic Elm Species and Hybrids for Larvae and Adults of the Elm Leaf Beetle (Coleoptera : Chrysomelidae) ». Arboriculture & ; Urban Forestry 27, n^o 3 (1 mai 2001) : 118–25. http://dx.doi.org/10.48044/jauf.2001.014.

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Selected elms (Ulmus spp.) and their hybrids growing at The Morton Arboretum in Lisle, Illinois, U.S., were evaluated in no-choice larval and adult suitability laboratory bioassays for the elm leaf beetle, Pyrrhalta luteola Miiller. No-choice larval suitability studies revealed that the elm biotypes of U. davidiana X U.japonica, U. elongata, U. parvifolia, U. szechuanica, and U. 'Morton'-Accolade™ were the least suitable for larval development and pupation. Ulmus davidiana X U. japonica-wilsoniana-pumila, U. pumila (reference), U. lamellosa, U. macrocarpa, U. szechuanica X U. japonica, U. 'Morton Plainsman'-Vanguard™, and U. 'Morton Red Tip'-Danada Charm™ were more suitable for larval development and pupation. Similar low and high suitability rankings were also observed for adult beetles in no-choice studies reared from the larval suitability study. Larval development time and proportion of larvae reaching pupation appear to be good predictors of adult emergence. Larvae feeding on less suitable biotypes took longer to develop with a lesser proportion of adults emerging. The reverse is also true. Preovipositional period was found, in part, to be a function of suitability. Female longevity reflected suitability for the elms tested in this study. Ulmus pumila appears to be a major influence on both larval and adult host suitability. The least suitable elm biotypes, listed above, show promise for future elm breeding programs and for use in localities with acute and chronic elm leaf beetle populations.

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Deák, Csilla, Katalin Jäger, Veronika Anna Nagy, Réka Oszlányi, Beáta Barnabás et István Papp. « C-Repeat Binding Factor and Dehydrin Genes are Induced Co-Ordinately in Drought Tolerance Response of Wheat Cultivars ». Journal of Agricultural Science 9, n^o 2 (11 janvier 2017) : 18. http://dx.doi.org/10.5539/jas.v9n2p18.

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Four bread wheat genotypes with contrasting drought stress tolerance were studied. Expression levels of dehydrin (Wdhn13) and C-repeat binding factor (Cbf14, Cbf15) genes were investigated in leaves of two drought tolerant (Plainsman V, Mv Emese) and two sensitive (GK Élet, Cappelle Desprez) cultivars by semi-quantitative RT-PCR during drought treatment at anthesis. Coordinate induction of Cbf14, Cbf15 and Wdhn13 genes occurred at a late stage of stress treatment in all cultivars except the most sensitive Cappelle Desprez, where no induction was evident. The most pronounced late induction of genes was observed in the tolerant Mv Emese genotype. Cbf14, Cbf15 and Wdhn13 showed largely parallel changes of expression in stressed adult plants. The mRNA level of the same set of genes was measured in leaves of non-stressed seedlings with qRT-PCR method. Expression level of Wdhn13 was high and low in seedlings of tolerant and sensitive cultivars, respectively. Cbf15 specific transcript was barely detectable in leaves of non-stressed seedlings. In order to shed light on any potential difference in hormone responsiveness, seedlings were subjected to ABA treatment in vitro. At low hormone concentrations (10 and 20 µM ABA) consistently weaker ABA induced root growth retardation of GK Élet was found in comparison with the other three cultivars. Results highlight pronounced and late induction of a set of defence genes and low ABA sensitivity as features appearing in drought tolerant and sensitive responses, respectively. Data is discussed in the light of multifactorial determination of the complex phenotype of drought tolerance in wheat.

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Trammell, Michael A., Andrew A. Hopkins, Twain J. Butler et Dennis Walker. « Registration of ‘Plainsmen’ tall wheatgrass ». Journal of Plant Registrations 15, n^o 3 (20 août 2021) : 415–21. http://dx.doi.org/10.1002/plr2.20142.

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Glickman, Susan. « Canadian Prospects:Abram's Plainsin Context ». University of Toronto Quarterly 59, n^o 4 (mai 1990) : 498–516. http://dx.doi.org/10.3138/utq.59.4.498.

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Van Impe, Luc. « Een depot met kokerbijlen uit de Plainseau-cultuur (late Bronstijd) te Heppeneert-Wayerveld (Maasik, prov. Limburg) ». Archeologie in Vlaanderen, n^o 4 (1 janvier 1995) : 7–38. http://dx.doi.org/10.55465/epkm6042.

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Steegstra, Hannie. « Malligheden. Een Noord-Franse gietmal in een Nederlands museum ». Paleo-aktueel, n^o 30 (14 décembre 2019) : 23–29. http://dx.doi.org/10.21827/pa.30.23-29.

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Saved for Science? (Summary, already written in 2008 by Jay Butler). Especially in northern France, much has been lost in the course of the wars that devastated the area, but much has been saved too. Particularly intriguing among the saved Bronze Age objects are the bronze casting moulds, which in prehistoric times must have been common objects, but which are now scarce because most examples would have been sacrificed to the smith’s ever-ready melting pot. One such object, a finely preserved half-mould for a socketed axe (of the Plainseau family, with slight plastic imitation wings) is in the possession of the Noordbrabants Museum in ’s-Hertogenbosch. It was purchased by the museum in 1962, for the sum of 50 Dutch guilders, from a reputable Eindhoven antique dealer, Dirven, in that city. The museum records state only that it was found in the north of France or in Belgium. A not uninteresting part of the work of a researcher working on the Bronze Age is the tracking down of missing finds: for example, a half-mould for a socketed axe, said to have been found in the surroundings of Amiens, which was seen, described and (well) drawn by Henri Breuil before 1902. This half-mould was said to be part of a hoard of bronze implements, which included spearheads, pins and socketed axes. Also belonging to the hoard was a core (also of bronze) for casting socketed axes.

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Camacho-Reyes, Jairo A., et Claudia P. Camacho-Rozo. « Aspectos sobre la historia natural de macroinvertebrados en esteros semipermanentes de la altillanura en el departamento de Casanare ». Orinoquia 14, n^o 2 sup (1 septembre 2010) : 71–82. http://dx.doi.org/10.22579/20112629.92.

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Titulo en ingles: Aspects of the natural history of macroinvertebrates in the high plains semi-permanent wetlands in the Department of Casanare.RESUMEN: Se realiza aportes al conocimiento sobre los ciclos vitales de los macroinvertebrados y se caracterizan sus microhábitats, en tres cuerpos de agua semipermanentes en sabana inundable y de desborde en la altillanura del municipio de Yopal-Casanare (Esteros San Martín (SM), el Trompillo (T) y la Ilusión (LI): 05° 21' 31''N 072º 13' 16''W; ubicados a 214 m.s.n.m.). Resultado del análisis cualitativo del material colectado en muestreos multianuales (1998, 1999, 2002 y 2008) en tres (I, II y III) épocas diferentes de lluvias en los meses de mayo a diciembre, se registraron 19 familias con 29 morfoespecies (24 sp SM, 20 T, 18 LI) para la etapa I; 28 familias y 47 morfoespecies (35 SM, 27 T, 32 LI) en la etapa II y 35 familias, 57 morfoespecies (52 SM, 40 T, 35 LI) en la III. Las comunidades de macroinvertebrados en estos ecosistemas evidencian varias etapas del ciclo vital: adultos; adultos y larvas; adultos, larvas y pupas; larvas y pupas; larvas. El Estero San Martin registro la mayor diversidad de especies seguido por el Trompillo y la Ilusión. El Estero San Martín presentó la mayor diversidad en el mes de diciembre, seguido de julio y el menor registro se obtuvo en mayo, época que coincide con el inicio de inundación de las sabanas.En estos ambientes de la llanura y la altillanura de la Orinoquía, los macroinvertebrados acuáticos desarrollan estrategias reproductivas y de supervivencia especiales para sobreponerse a los cambios drásticos impuestos por el medio, como se interpreta la valoración físico-química "In situ" del agua de los esteros estudiados, cuyos valores promedio multianuales son: Temperatura 29.4°C, Conductividad Eléctrica 263 µS.cm¯¹, pH 6.0 y OD4.4 mg.l¯¹Palabras clave: Esteros, macroinvertebrados, semipermanentes, Yopal.ABSTRACT: It makes contributions to knowledge about the life cycles of macroinvertebrates and their microhabitats are characterized in three semi-permanent water bodies in flooded savannah and overflow in the high plains of the municipality of Yopal-Casanare (tropical ponds San Martín (SM), the Trompillo ( T) and Illusion (LI): 05 ° 21 '31''N 072 º 13' 16''W, located at 214 meters). Result of qualitative analysis of material samples collected from multi-year (1998, 1999, 2002 and 2008) in three (I, II and III) different periods of rainfall in the months from May to December, there were 19 families with 29 morphospecies (24 sp SM, 20 T, 18 LI) for stage I; 28 families and 47 morphospecies (35 SM, 27 T, 32 LI) in stage II; and 35 families, 57 morphospecies (52 SM, 40 T, 35 LI) in the stage III. Macroinvertebrate communities in these ecosystems show various stages of life cycle: adult, adults and larvae, adults, larvae and pupae, larvae and pupae, larvae. The San Martin pond recorded the highest species diversity followed by Trompillo and Illusion. The San Martin pond presented the greatest diversity in the month of December, followed by July and the lowest reading was obtained in May, coinciding with the onset of flooding of the plains.In these environments the plain and the high plains of the Orinoco, aquatic macroinvertebrates develop reproductive and survival strategies to overcome special drastic changes imposed by the environment, as interpreted physical- chemical assessment in situ of water ponds studied, whose multi-year average values are: temperature 29.4 ° C, Electrical Conductivity 263 µS.cm ¯ ¹, pH 6.0 and OD 4.4 mg.l ¯¹Key words: macroinvertebrates, tropical ponds, semipermanent, Yopal.

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Nagy, É., Á. Szabó-Hevér, S. Lehoczki-Krsjak, C. Lantos, E. Kiss et J. Pauk. « Detection of drought tolerance-related QTL in the Plainsman V./Cappelle Desprez doubled haploid wheat population ». Cereal Research Communications, 11 décembre 2021. http://dx.doi.org/10.1007/s42976-021-00229-y.

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AbstractDrought stress is one of the major abiotic factors that significantly reduces wheat grain yield. Improving drought tolerance is a challenge that plant breeders are facing nowadays. In this study, our goal was to identify quantitative trait loci (QTL) in the Plainsman V./Cappelle Desprez doubled haploid (DH) population under drought induced as decreased irrigation (ds) and well-watered (ww) conditions in glasshouse. In total, 54 QTL were detected across the three years in two water regimes linked to 10 drought tolerance-related agronomic traits. Out of the detected QTL regions several have been previously reported. The QTL on chromosome 1A (wPt-744613-wPt-8016) related to thousand grain weight was detected in both ds and ww conditions, explaining the 12.7–17.4% of the phenotypic variance. QTL for grain yield was detected on chromosomes 1A, and 6B in the ds treatment. Numerous QTL was identified under both irrigation levels.

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Kozlovic, Anton Karl. « Cecil B. DeMille's Greatest Authenticity Lapse ? » Kinema : A Journal for Film and Audiovisual Media, 10 avril 2003. http://dx.doi.org/10.15353/kinema.vi.1045.

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THE PLAINSMAN (1937): CECIL B. DeMILLE'S GREATEST AUTHENTICITY LAPSE? Cecil B. Demille was a seminal founder of Hollywood whose films were frequently denigrated by critics for lacking historical verisimilitude. For example, Pauline Kael claimed that DeMille had "falsified history more than anybody else" (Reed 1971: 367). Others argued that he never let "historical fact stand in the way of a good yarn" (Hogg 1998: 39) and that "historical authenticity usually took second place to delirious spectacle" (Andrew 1989: 74). Indeed, most "film historians regard De Mille with disdain" (Bowers 1982: 689) and tended to turn away in embarrassment because "De Mille had pretensions of being a historian" (Thomas 1975: 266). Even Cecil's niece Agnes de Mille (1990: 185) diplomatically referred to his approach as "liberal." Dates, sequences, geography, and character bent to his needs." Likewise, James Card (1994: 215) claimed that: "DeMille was famous for using historical fact only...

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Kanbar, Osama Zuhair, Paul Chege, Csaba Lantos, Erzsebet Kiss et Janos Pauk. « Characterization of winter wheat (Triticum aestivum L.) germplasm for drought tolerance ». Plant Genetic Resources : Characterization and Utilization, 10 novembre 2020, 1–13. http://dx.doi.org/10.1017/s1479262120000398.

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Abstract Climate change realities such as high-temperature levels are among the causes of drought episodes affecting the productivity and yield stability of crops worldwide. Breeders, therefore, have a daunting challenge to overcome and a large gap to seal in the agricultural sector arising due to drought through the improvement of new tolerant germplasm. It is in this endeavour that the present study, which included nine winter wheat genotypes grown in the greenhouse, was conducted to evaluate their performance under well-watered and drought stress treatments for the traits: heading time, plant height, above-ground biomass, seed number/plant, grain yield/plant, harvest index, root length and root dry mass. A lower grain yield/plant was observed for each studied genotype under drought stress conditions than for those under well-watered conditions. Additionally, grain yield/plant depression varied from 69.64 to 81.73% depending on the genotype. Positive significant correlations between grain yield/plant and heading time, above-ground biomass, and seed number/plant under the drought stress treatment were obtained. Genotypes that recorded high root dry mass had both high above-ground biomass and seed number/plant under drought stress conditions. Positive correlations between grain yield/plant depression and plant height, seed number/plant, and harvest index depressions were also observed. Grain yield for each genotype under drought stress conditions was recorded, and the varieties ‘Plainsman V.’, ‘GK Berény’ and germplasm ‘PC61’, ‘PC110’ showed the best drought tolerance. These genotypes and germplasm will be used in different drought tolerance experiments and breeding programmes.

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Atherwood, Serge. « Does a prolonged hardship reduce life span ? Examining the longevity of young men who lived through the 1930s Great Plains drought ». Population and Environment, 7 mai 2022. http://dx.doi.org/10.1007/s11111-022-00398-w.

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AbstractThe Great Plains drought of 1931–1939 was a prolonged socio-ecological disaster with widespread impacts on society, economy, and health. While its immediate impacts are well documented, we know much less about the disaster’s effects on distal human outcomes. In particular, the event’s effects on later life mortality remain almost entirely unexplored. Closing this gap would contribute to our understanding of the long-term effects of place-based stress. To help fill this gap, I use a new, massive, linked mortality dataset to investigate whether young men’s exposure to drought and dust storms in 341 Great Plains counties was linked to a higher risk of death in early-old age. Contrary to expectations, results suggest exposure to drought conditions had no obvious adverse effect among men aged 65 years or older at time of death—rather, the average age at death was slightly higher than for comparable men without exposure. This effect also appears to have been stronger among Plainsmen who stayed in place until the drought ended. A discussion of potential explanations for these counterintuitive results is provided.

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