Dissertations / Theses on the topic 'Hordeum vulgare L'
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Johnston, Paul Andrew, and n/a. "Molecular characterisation of chromatin introgressed from Hordeum bulbosum L. into Hordeum vulgare L." University of Otago. Department of Biochemistry, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080215.161403.
Full textSalvo-Garrido, Haroldo E. "Genome analysis in wild (Hordeum bulbosum L.) and transgenic barley (Hordeum vulgare L.)." Thesis, University of East Anglia, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327510.
Full textBattke, Florian Matthias. "Analyse Schwermetall-induzierter Stoffwechselwege in Hordeum vulgare L." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=977865428.
Full textAdhanom, Teferi Micael. "Variation in Barley (Hordeum vulgare L.) from Eritrea." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295049.
Full textCaredda, Stéphane. "Androgénèse et Albinisme chez l'Orge (Hordeum vulgare L. )." Reims, 2000. http://www.theses.fr/2000REIMS008.
Full textHaase, Susan. "Rhizodeposition and biotic interactions in the rhizosphere of Phaseolus vulgaris L. and Hordeum vulgare L." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:100-opus-2487.
Full textJasaitis, Edgaras. "Kompleksinis sunkiųjų metalų poveikis vasariniams miežiams (Hordeum vulgare L.)." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100614_085348-19440.
Full textIntegrated heavy metals impact on spring barley (Hordeum vulgare L.). The object of the research is summer barely (Hordeum vulgare L., breed “Aura DS”). These plants were chosen for the research for their good germination rate and quick growing. The aim of the research work is to evaluate the complex effect of heavy metals (Cd, Cu, Ni, Zn, Pb and Cr) on the growth of summer barely and to determine the type of the interaction between these metals. The research work was done in two stages. At first, the differentiated (discrete) effect of Cd, Cu, Ni, Zn, Pb and Cr on growth of summer barley was investigated (EC50 concentrations were assessed depending on the reduction of dry biomass compared with control in the interval of 40 – 60%: Cd-10,4; Cu-2,6; Ni-10,84; Zn-160; Pb-66,9 and Cr-14,51 µM). Concentrations for complex research of heavy metals were chosen after differentiated effect of these metals on the dry biomass of summer barley was evaluated separately. Complex research was made only with dual interactions of these (Cd, Cu, Ni, Zn, Pb and Cr) metals. The solutions for complex research were made of two separate metals, and the concentrations of these metals were a half EC50 values. The types of possible interactions between these heavy metals were determined when the results of EC50 (one metal) and 0,5xEC50 (two metals in complex) effects were compared: antagonism, synergy and total interaction. Selected concentrations of heavy metals were put in the nutritional solution... [to full text]
Genc, Yusuf. "Screening for zinc efficiency in barley (Hordeum vulgare L.)." Title page, table of contents and summary only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phg324.pdf.
Full textRamirez, Herbert 1959. "Flower and seed size in barley (Hordeum vulgare L.)." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/291929.
Full textO'Sullivan, Stephen. "Expression of calmodulin in barley (Hordeum vulgare L.) aleurone." Thesis, Heriot-Watt University, 2005. http://hdl.handle.net/10399/222.
Full textHunter, Clifford Paul. "Plant regeneration from microspores of barley Hordeum vulgare L." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/7765.
Full textJaffe, Benjamin. "Genome analysis of Hordeum bulbosum L. and hybrids with H. vulgare L." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302327.
Full textGustafsson, Dan. "The origin of naked barley (Hordeum vulgare L. ssp. vulgare) studied bythe nud gene." Thesis, Linköpings universitet, Molekylär genetik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-94288.
Full textBachmann, Astrid. "Jasmonat-induzierter Lipidkatabolismus im Gerstenblatt (Hordeum vulgare L. cv. Salomé)." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969914830.
Full textZahn, Martina. "Pflanzenphysiologische Untersuchungen der nichtparasitären Blattverbräunung der Sommergerste Hordeum vulgare L." Karlsruhe : FZKA, 2005. http://bibliothek.fzk.de/zb/berichte/FZKA7128.pdf.
Full textPakniyat, Jahromi Hassan. "Genetic studies on salt tolerence in Barley (Hordeum vulgare L.)." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319253.
Full textOppong-Konadu, Eden Y. "Evolution in genetically diverse populations of barley (Hordeum vulgare L.)." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336773.
Full textJacquard, Cédric Clément Christophe. "Embryogenèse pollinique chez l'orge (Hordeum vulgare L.) : importance du prétraitement." Reims : S.C.D. de l'Université, 2007. http://scdurca.univ-reims.fr/exl-doc/GED00000737.pdf.
Full textJacquard, Cédric. "Embryogenèse pollinique chez l’orge (Hordeum vulgare L. ) : importance du prétraitement." Reims, 2007. http://theses.univ-reims.fr/exl-doc/GED00000737.pdf.
Full textThe production of doubled haploid through pollen embryogenesis represents a modern tool for the improvement of cultivated species enabling plant breeders to produce homozygous lines in a few months. Pollen embryogenesis consists in the regeneration of haploid plantlets from microspores, which are initially destined to develop into pollen grains. This technique allows to decrease the time and the cost of classical selection, and to study the mechanisms involved in the embryo formation. Albinism restrains the use of pollen embryogenesis in cereals. This study is based on applied and fundamental aspects in order to 1- optimize the anther culture protocol and to improve green plantlet regeneration in recalcitrant cvs. And 2- identify molecular mechanisms involved in the switch of microspore, especially defenses. In order to optimize the protocole of anther culture in barley (Hordeum vulgare L. ) we used the winter cv. Igri which regenerates chlorophyllous plantlets at 90%, and 5 spring cvs. Giving rise mostly to albino plantlets. The copper sulphate addition in media improved the anthers response, the quantity of regenerated plantlets and the percentage of regenerated chlorophyllous plantlets, with all tested cvs. Spring and summer are the best seasons for pollen embryogenesis in cvs used. Finally, we noticed that results also depended on spike position on the tillering plate. Our results indicate that the pretreatment induces defence mechanisms in anthers, as revealed by an oxidative burst and expression gene induction. Copper sulphate addition in the media induced more progressive and less important induction of gene expression
Reisinger, Veronika. "Biogenese photosynthetischer Elektronentransport-Komplexe in Plastiden der Gerste(Hordeum vulgare L.)." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-87700.
Full textMonteagudo, Gálvez Arantxa. "Phenological adaptation and its genetic mechanisms in barley (Hordeum vulgare L.)." Doctoral thesis, Universitat de Lleida, 2020. http://hdl.handle.net/10803/669235.
Full textEn cebada, la luz y la temperatura controlan la floración a través de la interacción entre los genes de vernalización y fotoperíodo. Se conoce menos sobre el efecto de otros atributos, como la calidad de luz. El objetivo principal de esta tesis es profundizar en el control genético del tiempo de floración en cebada, centrándonos en cómo la temperatura, el fotoperíodo y la calidad espectral, afectan la fenología y los genes que la controlan. En este trabajo se ha revelado la regulación de los principales genes de floración bajo condiciones no-inductivas, se han propuesto nuevos candidatos de la ruta de floración y se ha profundizado en la respuesta a los cambios de longitud de día y de calidad de luz. Las diferencias genotípicas encontradas y los mecanismos genéticos propuestos en este trabajo pueden ser herramientas útiles para el diseño de ideotipos de cebada mejor adaptados para futuras condiciones climáticas.
In barley, temperature and light cues control flowering through the interaction between vernalization and photoperiod genes. Less is known about the effect of other attributes, as light quality. The main objective of this thesis is to increase our knowledge on the genetic control of flowering time in barley, focusing on how temperature, photoperiod and spectral quality, affect to phenology and the flowering time genes. In this work, the regulation of the main flowering genes under non-inductive conditions was revealed, new candidates for the flowering pathway were proposed, and the response to changes in day length and light quality has been deepened. The genotypic differences found and the genetic mechanisms proposed in this work can be useful tools for the design of barley ideotypes better adapted for future climatic conditions.
Schäfer, Christine. "Etablierung eines Transposon-tagging-Systems in transgener Gerste (Hordeum vulgare L.)." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=967440629.
Full textJefferies, Stephen P. "Marker assisted backcrossing for gene introgression in barley (Hordeum vulgare L.)." Title page, contents and chapter 1 only, 2000. http://web4.library.adelaide.edu.au/theses/09APSP/09apspj45.pdf.
Full textLi, Cheng-dao. "Genetic control of hydrolytic enzymes in germinated barley (Hordeum vulgare L.) /." Title page, contents and summary only, 1997. http://web4.library.adelaide.edu.au/theses/09APSP/09apspl693.pdf.
Full textFerreira, Jéssica Rosset. "Variabilidade genética da tolerância ao alumínio em cevada (Hordeum vulgare L.)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/128125.
Full textBrazil is an important barley importer being that cereal one of the most sensitives to toxic aluminium (Al3+) among grasses. The Al3+ inhibits root growth, which can lead to reduced uptake of water and nutrients. The HvAACT1 gene encodes a citrate transporter responsible for Al3+ tolerance in barley. There is little information about the genetic diversity in Brazilian barley and about its variability regarding Al3+ tolerance. In this context, the objectives of this study were to characterize the Al3+ tolerance and the genetic variability of cultivated and wild genotypes from the Embrapa Wheat barley core collection, to analyze the transcribed region of the HvAACT1 gene and genetic diversity in Brasilian barley. Phenotyping was performed in hydroponics for 65 genotypes (59 cultivated and six wild genotypes). Based on the hydroponics data, 22 genotypes were selected for short-term soil experiment. The genotypes grown in Brazil, Antarctica 01 and MN 6021, were used as tolerant and sensitive controls, respectively. Tolerance higher than Antarctica 01 was found in six genotypes and only one showed higher sensitivity than MN 6021. The genotype Golden Promise, worldwide recognized as sensitive, was classified as tolerant in hydroponics and intermediate in soil. In soil, Dayton and Murasakimochi surpassed Antarctica 01, and the transgenic line, L5, presented the best performance. A 52% correlation was obtained between the hydroponics and soil data. The structural region of the HvAACT1 gene was highly similar between the genotypes Antarctica 01 and FM404, tolerant, and MN 6021 e Paraí-I, sensitive. The 21-indel marker could not be associated with tolerance based on the hydroponics data, however, in soil, a correlation was detected. The 1 kb insertion in the HvAACT1 promoter region, which is associated with tolerance, was identified only in Dayton and Murasakimochi, which performed better than Antarctica01 in soil and hydroponics. The variability in Al3+ tolerance among Brazilian genotypes is not associated with the analyzed markers. About the genetic variability, the polymorphic information content among Brazilian genotypes was lower in comparison to the foreign and wild accessions. In general, the lower diversity in Brazilian barley can be explained by the use of common ancestors. Chromosome 4, where the HvAACT1 gene is located, presented the lowest polymorphism together with chromosome 6. The incorporation of the allele containing the 1 kb insertion in the HvAACT1 promoter region as well as the utilization of the transgenic line L5 could be alternatives to improve the performance of Brazilian barley in acidic soil. The barley breeding programs in Brazil should consider the use of more diverse materials in order to increase the barley tolerance to stresses and, eventually yield.
Murcia, Julian Alejandro Giraldo. "Ação de reguladores vegetais em trigo (Triticum aestivum L.) e cevada (Hordeum vulgare L.)." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11144/tde-28092016-114839/.
Full textPlant tissues contain circulating endogenous metabolites which not necessarily play nutritional function but can regulate growth, plant hormones, that can be also exogenously applied for planned effects in plant growth. These molecules when sprayed on plants allow desirable effects on the plant growth. Moreover, synthetic analogues with similar action have been used in agriculture for the same purpose. However, the effect of growth regulators is variable among species and their phoenological stages, requiring specific studies that provide appropriate responses to their application. Similarly, there are also capable of acting on endogenous hormone production, limiting or stimulating their biosynthesis and consequently affecting the processes of growth and plant development. The application of such molecules in agriculture can be beneficial in controlling the plant growth, reversing the energy produced by photosynthesis for that growth to agronomic yield of crops. Several crops, including cereals, tend to respond with excessive vegetative growth to the increase of fertilizer application causing productivity decreases and damages to the crop due to the plant lodging. Thus, the present study was carried out to evaluate the morphological and physiological changes by the use of plant growth regulators on wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.), aiming the reduction of the plant size and increases of productivity. The experiments were conducted with both cereal species sown in pots. The applications of the treatments were performed at the beginning of stem elongation stage The effects of foliar application of different plant growth regulators that restrict the gibberellin synthesis in the plant were evaluated: Abscisic acid (ABA), trinexapac-ethyl (Moddus), Daminozide (SADH), Ethephon (Ethrel), and chlormequat chloride (CCC). The following variables were measured: plant height, SPAD index (indirect chlorophyll content), transpiration, stomatal conductance, and dry mass of stems and spikelets. The data were analyzed by the Tukey test at 5% probability level. The spray with ABA, SADH, and Ethrel decreased significantly the dry mass of the stem and promoted growth retardation (plant height). However, the application of ABA increased significantly the harvest index, as well as the dry mass of the grains. Treatments with two sprays of ABA (24 g L-1), with an interval of a week restricted the plant growth in height improving the architecture thereof, chlorophyll content, and gas exchange, resulting in an increment of 23% and 33% in dry matter of grains of wheat and barley, respectively. Therefore, the application of ABA may be considered as an alternative for improving the productivity of cereal crops.
Plöscher, Matthias. "Analyse membranständiger Subproteome aus Etioplasten und Chloroplasten der Gerste (Hordeum vulgare L.)." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-93563.
Full textScheer, Christian Ernst. "Transport, Kompartimentierung und Abbau von glutathionhaltigen Fremdstoffmetaboliten in Gerste (Hordeum vulgare L.)." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969381697.
Full textEglinton, Jason Konrad. "Novel alleles from wild barley for breeding malting barley (Hordeum vulgare L.) /." Title page, abstact and table of contents only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phe313.pdf.
Full textClark, Dale Rogers. "Methods of screening for induced apomictic mutants in barley (Hordeum vulgare L.)." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184354.
Full textWei, Wenxue. "Physiological and molecular mechanisms of salt tolerance in barley (Hordeum vulgare L.)." Thesis, University of Wolverhampton, 2002. http://hdl.handle.net/2436/93525.
Full textNobre, Jose Manso Preto. "Studies on methods for the genetic manipulation of barley (Hordeum vulgare L.)." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336932.
Full textShaik̲h̲, Naṣīruddīn. "Spatial regulation of carbohydrate metabolism in a monocotyledonous leaf (Hordeum vulgare L.)." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301274.
Full textPlöscher, Matthias. "Analyse membranständiger Subproteome aus Etioplasten und Chloroplasten der Gerste (Hordeum vulgare L.)." kostenfrei, 2008. http://edoc.ub.uni-muenchen.de/9356/.
Full textGould, Nicholas. "The role of phloem in K'+ nutrition of barley (Hordeum Vulgare L.)." Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395733.
Full textSantos, Alexandre Barreto Almeida dos [UNESP]. "Períodos críticos de défices hídricos em cultivares de cevada (Hordeum vulgare L.)." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/93785.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Universidade Estadual Paulista (UNESP)
O presente trabalho objetivou avaliar a tolerancia a seca em seis cultivares de cevada (Borema, Lagoa, BRS . 180, BRS . 195, BRS . 225 e EMB . 128), por meio da imposicao de ciclos de seca em diferentes estagios fenologicos da cultura e tambem, alguns parametros de produtividade. Os tratamentos utilizados foram: tratamento 1 - Vasos irrigados constantemente ate o final do ciclo da cultura; tratamento 2 - Ciclo de seca iniciado aos 45 Dias apos a semeadura (DAS); tratamento 3 - Ciclo de seca iniciado aos 65 DAS e tratamento 4 - Ciclo de seca iniciado aos 83 DAS. Foram avaliados parametros fisiologicos: Resistencia difusiva ao vapor de agua (Rs), Teor relativo de agua (TRA) e Potencial de agua na folha ( æf); tambem parametros de produtividade: Altura, Materia seca da parte aerea, Numero de espigas, Tamanho das espigas e peso de graos. Utilizou-se o delineamento em blocos casualizados: quatro blocos, seis cultivares de cevada e quatro tratamentos, totalizando noventa e seis unidades experimentais. O experimento foi conduzido durante os meses de agosto a novembro de 2005, em estufa plastica localizada na area experimental do Departamento de Engenharia Rural - Faculdade de Ciencias Agronomicas de Botucatu . UNESP. Os dados analisados permitiram concluir que todas as cultivares de cevada apresentaram adaptacao ao deficit hidrico e a cultivar EMB . 128 foi a que mais se adaptou as condicoes de seca. O deficit hidrico quando ocorre na fase de florescimento e grao leitoso afeta com maior severidade o peso de graos.
The objective of this research was to study drought tolerance in six barley cultivars (Borema, Lagoa, BRS-180, BRS-195, EMB-128 e BRS-225), with application of cycle of water deficit in differents phenological phases of crop and evaluate yield parameters. The treatments were: treatment 1 - pots constantlly irrigated until hardest; treatment 2 - Cycle of water deficit started 45 days from the sowing (DFS); treatment 3 - Cycle of water deficit started 65 DFS and treatment 4 - Cycle of water deficit started 83 DFS. The following physiological parameters were evaluated: Leaf diffusive resistance to Water vapour (Rs), Relative water content (RWC) and leaf water potential (Øl); yield parameters: height, dry matter of air part, spikes number, spikes size and weight of grains. Pots were arranged in a randomized block with four treatments, four blocks and six barley cultivars, resulting in ninety six vases. The experiment was conducted during months of august to november 2005, at plastic greenhouse localizated in experimental area of Rural Engenieer Department of UNESP Botucatu. 4 The results showed that all barley cultivars had adaptation to deficit water and the cultivar EMB-128 had better adaptation. When water deficit occur in flowering phase and milky grain the wheight of grain is affected with severity.
Santos, Alexandre Barreto Almeida dos 1977. "Períodos críticos de défices hídricos em cultivares de cevada (Hordeum vulgare L.) /." Botucatu: [s.n.], 2006. http://hdl.handle.net/11449/93785.
Full textBanca: João Carlos Cury Saad
Banca: Mariana Fraga S. Muçouçah
Resumo: O presente trabalho objetivou avaliar a tolerancia a seca em seis cultivares de cevada (Borema, Lagoa, BRS . 180, BRS . 195, BRS . 225 e EMB . 128), por meio da imposicao de ciclos de seca em diferentes estagios fenologicos da cultura e tambem, alguns parametros de produtividade. Os tratamentos utilizados foram: tratamento 1 - Vasos irrigados constantemente ate o final do ciclo da cultura; tratamento 2 - Ciclo de seca iniciado aos 45 Dias apos a semeadura (DAS); tratamento 3 - Ciclo de seca iniciado aos 65 DAS e tratamento 4 - Ciclo de seca iniciado aos 83 DAS. Foram avaliados parametros fisiologicos: Resistencia difusiva ao vapor de agua (Rs), Teor relativo de agua (TRA) e Potencial de agua na folha (æf); tambem parametros de produtividade: Altura, Materia seca da parte aerea, Numero de espigas, Tamanho das espigas e peso de graos. Utilizou-se o delineamento em blocos casualizados: quatro blocos, seis cultivares de cevada e quatro tratamentos, totalizando noventa e seis unidades experimentais. O experimento foi conduzido durante os meses de agosto a novembro de 2005, em estufa plastica localizada na area experimental do Departamento de Engenharia Rural - Faculdade de Ciencias Agronomicas de Botucatu . UNESP. Os dados analisados permitiram concluir que todas as cultivares de cevada apresentaram adaptacao ao deficit hidrico e a cultivar EMB . 128 foi a que mais se adaptou as condicoes de seca. O deficit hidrico quando ocorre na fase de florescimento e grao leitoso afeta com maior severidade o peso de graos.
Abstract: The objective of this research was to study drought tolerance in six barley cultivars (Borema, Lagoa, BRS-180, BRS-195, EMB-128 e BRS-225), with application of cycle of water deficit in differents phenological phases of crop and evaluate yield parameters. The treatments were: treatment 1 - pots constantlly irrigated until hardest; treatment 2 - Cycle of water deficit started 45 days from the sowing (DFS); treatment 3 - Cycle of water deficit started 65 DFS and treatment 4 - Cycle of water deficit started 83 DFS. The following physiological parameters were evaluated: Leaf diffusive resistance to Water vapour (Rs), Relative water content (RWC) and leaf water potential (Øl); yield parameters: height, dry matter of air part, spikes number, spikes size and weight of grains. Pots were arranged in a randomized block with four treatments, four blocks and six barley cultivars, resulting in ninety six vases. The experiment was conducted during months of august to november 2005, at plastic greenhouse localizated in experimental area of Rural Engenieer Department of UNESP Botucatu. 4 The results showed that all barley cultivars had adaptation to deficit water and the cultivar EMB-128 had better adaptation. When water deficit occur in flowering phase and milky grain the wheight of grain is affected with severity.
Mestre
Soares, Rosane Michele Duarte. "Caracterização parcial de amido em cultivares brasileiros de cevada (Hordeum vulgare L.)." Florianópolis, SC, 2003. http://repositorio.ufsc.br/xmlui/handle/123456789/86364.
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Neste trabalho foram analisados dois cultivares brasileiros de cevada com o objetivo de se determinar a composição físico-química da farinha, realizar o isolamento do amido, determinar a composição química do mesmo e avaliar o poder de inchamento e solubilidade relacionando estas propriedades com a composição química do amido isolado. Na segunda parte deste trabalho foram estudadas as propriedades térmicas, microscópicas e reológicas do amido isolado. Os cultivares selecionados foram: o cervejeiro, BR-2 e um nu, ainda em caráter experimental no país. As análises físico-químicas foram conduzidas seguindo as normas da American Association of Cereal Chemists (AACC) e todas foram realizadas em triplicata, considerando-se significativo valores de p £ 0,05. Os resultados da composição físico-química da farinha, mostraram valores significativamente diferentes entre os dois cultivares (p £ 0,05). Não foram observadas diferenças significativas para os valores de b-glucanas. O amido isolado apresentou diferença significativa para os teores de amido, proteínas, lipídios, amilose e cinzas (p £ 0,05). O conteúdo de amilose parece ter influenciado diretamente nas características de inchamento e solubilidade. Para as propriedades térmicas foram observadas diferenças (p £ 0.05) quanto à temperatura de gelatinização. O estudo de retrogradação (8 dias de estocagem/ 4 ºC) revelou que os dois cultivares apresentaram índices elevados da mesma ( > 70%). A microscopia óptica aliada à técnica de DSC, pôde ilustrar e confirmar a perda de birrefringência durante o processo de gelatinização. As propriedades de pasta revelaram maior pico de viscosidade para o cultivar nu. As curvas de fluxo realizadas caracterizaram o amido isolado como dilatante e os experimentos oscilatórios demonstraram que G' e G" comportaram-se de maneira semelhante durante o aquecimento e resfriamento da suspensão de amido. Os valores de tan d diminuíram a medida que G' e G" aumentavam comprovando a formação de gel. As diferenças observadas entre os dois cultivares com relação às demais análises realizadas podem ter sido resultantes das técnicas de escolha para o isolamento e/ou ainda devido às características genéticas e ambientais de cada cultivar.
Kroth, Mariela Aparecida. "Caracterização molecular de cultivares brasileiros de cevada (Hordeum vulgare L.) por RAPD." Florianópolis, SC, 2004. http://repositorio.ufsc.br/xmlui/handle/123456789/86779.
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A cevada (Hordeum vulgare L.) é amplamente empregada na produção de cerveja e na ração animal. Recentemente, esse grão se tornou importante na alimentação humana, devido ao seu valor nutricional, especialmente a cevada nua. Existem diferenças significativas nas características nutricionais e para malteação entre as diversas variedades de cevada. O procedimento RAPD é capaz de separar variedades de cevada em vários níveis de similaridade. O objetivo desse trabalho foi analisar por RAPD seis cultivares Brasileiras de cevada nua, sete cultivares Brasileiras de cevada cervejeira e uma cultivar Norte-americana com característica cervejeira (Harrington). O DNA foi extraído com CTAB de folhas das plantas de cada cultivar. Reações de PCR foram realizadas com onze iniciadores aleatórios. Um total de 34 fragmentos de amplificação foi obtido com cinco iniciadores, 100% foram fragmentos polimórficos. Baseado no coeficiente de similaridade de Jaccard, um dendrograma foi construído. As variedades de cevada apresentaram um coeficiente médio de similaridade de 0,53. A análise individual das variedades mostrou monomorfismo intravarietal, ou seja, bandas monomórficas presentes em todos os indivíduos de uma mesma variedade. Essas bandas monomórficas foram consideradas bandas marcadoras, permitindo a diferenciação entre esses cultivares. Os coeficientes de similaridade intravarietal variaram de 0,53 a 0,87. Essa caracterização molecular utilizando RAPD é importante para o planejamento e desenvolvimento de futuros programas de melhoramento de cevada.
Keshtkar, Amir Hossein. "Genetic and physiological basis of drought tolerance in barley (Hordeum vulgare L.)." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491363.
Full textEl-Zayadi, Fawzi. "A genetic analysis of harvest index in barley (Hordeum vulgare L. emend. Lam.) /." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65362.
Full textWagner, Walter. "Dynamik und intrazelluläre Lokalisation des Fructanstoffwechsels in Gerste (Hordeum vulgare L. cv Gerbel) /." [S.l.] : [s.n.], 1985. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=7848.
Full textSenns, Bianca. "Untersuchungen zur Gibberellinkonjugation in Gerstenkaryopsen (Hordeum vulgare L. cv. Himalaya und cv. Salome)." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=960681418.
Full textSarkar, Sunita. "Relationship between gibberellins, height and stress tolerance in barley (Hordeum vulgare L.) seedlings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ56695.pdf.
Full textRanford, Julia Claire. "Studies on the expression of dormancy-related genes in barley (Hordeum vulgare L.)." Thesis, Heriot-Watt University, 1999. http://hdl.handle.net/10399/602.
Full textWilson, Christine M. "Molecular and cellular studies of early endosperm development in barley (Hordeum vulgare L.)." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/5099/.
Full textChristodoulou, Vangelis. "Genetic and molecular characterization of early maturity mutants of barley (Hordeum vulgare L.)." Thesis, University of East Anglia, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268511.
Full textDayteg, Christophe. "Automation of molecular markers in practical breeding of spring barley (Hordeum vulgare L.) /." Alnarp : Department of Plant Breeding and Biotechnology, Swedish University of Agricultaral Sciences, 2008. http://epsilon.slu.se/2007132.pdf.
Full textGarcia, Gimenez Guillermo. "Regulation of (1,3;1,4)-β-glucan synthesis in barley (Hordeum vulgare L.)." Thesis, University of Dundee, 2019. https://discovery.dundee.ac.uk/en/studentTheses/fc549364-8ed1-4840-ad6c-b868cfebb28b.
Full textLiu, Ru. "Molecular analysis of novel genes expressed in developing barley (Hordeum vulgare L.) seed." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46891.
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