TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 1996
Seed dormancy is a relatively complex trait in barley (Hordeum vulgare L.). Several dormancy loci... more Seed dormancy is a relatively complex trait in barley (Hordeum vulgare L.). Several dormancy loci were identified previously by quantitative trait locus analysis. Three reciprocal crosses were made in the present study between parents carrying specific dormancy alleles via linked molecular markers to verify individual dormancy locus effects and potential expression. Analyses of F2 progenies revealed that the dormancy allele at the locus flanked by the markers Ale and ABC302 on the long arm of chromosome 7 had a major effect on dormancy, and was at least partly epistatic to the dormancy locus in the ABC309-MWG851 interval near the telomere of the long arm of chromosome 7. In the absence of the dormancy allele in the Ale-ABC302 interval, the allele in the ABC309-MWG851 interval exerted moderate to large effects on dormancy. Cytoplasmic effects on dormancy were also observed. The germination percentages of progeny with relatively high levels of dormancy were more variable than those of...
... 'Alexis' from either the Northern European region or the Iberian Peninsula. ... 20.... more ... 'Alexis' from either the Northern European region or the Iberian Peninsula. ... 20. Shewry, PR., Brennan, C, Tathan, AS, Warburton, T., Fido, R., Smith, D., Griggs, D., Cantrell, I., Harris, N. In: Proceedings of the 46th Australian Cereal Chemistry Conference (CW Wrigley, ed). Cereal ...
5 Pags.Cytological identification of primary trisomics is an important part in the cytogenetic st... more 5 Pags.Cytological identification of primary trisomics is an important part in the cytogenetic study of a species. The objective of this study was the Cytological identification of nine primary trisomic types in sugarbeet (Beta vulgaris L.). Karyotype analyses were conducted in somatic metaphase and late-prophase cells. All nine types of primary trisomics in sugarbeet were cytologically identified by means of somatic karyotype analysis. Not all extra chromosomes could be identified with certainty at metaphase because of their similarity in size and arm ratio. Somatic prophase analysis was found to be useful in confirming the results of metaphase analysis of the extra chromosome present in some trisomic types.Peer reviewe
Carbon isotope discrimination (Δ) has been found to be either positively or negatively related to... more Carbon isotope discrimination (Δ) has been found to be either positively or negatively related to grain yield of small grain cereals when grown in contrasting environments. In order to clarify a possible association between grain yield of barley (Hordeum vulgare L.) and Δ of mature kernels, five 6-rowed and five 2-rowed barley cultivars were evaluated in 22 rainfed environments of northern Mediterranean Spain. Analyses of variance suggested that the genotypic Δ values were more consistent across environments than the genotypic yields. Genotype×environment (G×E) interaction for grain yield was further explored by fitting an AMMI (additive main effects and multiplicative interaction) model. The first 2 multiplicative axes were found significant. The AMMI2 model provided more accurate estimates of genotypic yields within environments than the conventional unadjusted means across replicates. AMMI2 estimates were used for input into cluster analysis, grouping environments that ranked gen...
27 CHAPTER 2 Theory and application of plant breeding for quantitative traits Javier Betrán, Jesú... more 27 CHAPTER 2 Theory and application of plant breeding for quantitative traits Javier Betrán, Jesú Moreno-González and Ignacio Romagosa ... Neo-Darwinian synthesis The theory of plant breeding rests on the work of two most influential biologists, Charles Darwin (18091882 ...
The food production and processing value chain is under pressure from all sides—increasing demand... more The food production and processing value chain is under pressure from all sides—increasing demand driven by a growing and more affluent population; dwindling resources caused by urbanization, land erosion, pollution and competing agriculture such as biofuels; and increasing constraints on production methods driven by consumers and regulators demanding higher quality, reduced chemical use, and most of all environmentally beneficial practices ‘from farm to fork’. This pressure can only be addressed by developing efficient and sustainable agricultural practices that are harmonized throughout the value chain, so that renewable resources can be exploited without damaging the environment. Bridges must, therefore, be built between the diverse areas within the food production and processing value chain, including bridges between different stages of production, between currently unlinked agronomic practices, and between the different levels and areas of research to achieve joined-up thinking within the industry, so that the wider impact of different technologies, practices and materials on productivity and sustainability is understood at the local, regional, national and global scales. In this article, we consider the challenges at different stages and levels of the value chain and how new technologies and strategies could be used to build bridges and achieve more sustainable food/feed production in the future.
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 1996
Seed dormancy is a relatively complex trait in barley (Hordeum vulgare L.). Several dormancy loci... more Seed dormancy is a relatively complex trait in barley (Hordeum vulgare L.). Several dormancy loci were identified previously by quantitative trait locus analysis. Three reciprocal crosses were made in the present study between parents carrying specific dormancy alleles via linked molecular markers to verify individual dormancy locus effects and potential expression. Analyses of F2 progenies revealed that the dormancy allele at the locus flanked by the markers Ale and ABC302 on the long arm of chromosome 7 had a major effect on dormancy, and was at least partly epistatic to the dormancy locus in the ABC309-MWG851 interval near the telomere of the long arm of chromosome 7. In the absence of the dormancy allele in the Ale-ABC302 interval, the allele in the ABC309-MWG851 interval exerted moderate to large effects on dormancy. Cytoplasmic effects on dormancy were also observed. The germination percentages of progeny with relatively high levels of dormancy were more variable than those of...
... 'Alexis' from either the Northern European region or the Iberian Peninsula. ... 20.... more ... 'Alexis' from either the Northern European region or the Iberian Peninsula. ... 20. Shewry, PR., Brennan, C, Tathan, AS, Warburton, T., Fido, R., Smith, D., Griggs, D., Cantrell, I., Harris, N. In: Proceedings of the 46th Australian Cereal Chemistry Conference (CW Wrigley, ed). Cereal ...
5 Pags.Cytological identification of primary trisomics is an important part in the cytogenetic st... more 5 Pags.Cytological identification of primary trisomics is an important part in the cytogenetic study of a species. The objective of this study was the Cytological identification of nine primary trisomic types in sugarbeet (Beta vulgaris L.). Karyotype analyses were conducted in somatic metaphase and late-prophase cells. All nine types of primary trisomics in sugarbeet were cytologically identified by means of somatic karyotype analysis. Not all extra chromosomes could be identified with certainty at metaphase because of their similarity in size and arm ratio. Somatic prophase analysis was found to be useful in confirming the results of metaphase analysis of the extra chromosome present in some trisomic types.Peer reviewe
Carbon isotope discrimination (Δ) has been found to be either positively or negatively related to... more Carbon isotope discrimination (Δ) has been found to be either positively or negatively related to grain yield of small grain cereals when grown in contrasting environments. In order to clarify a possible association between grain yield of barley (Hordeum vulgare L.) and Δ of mature kernels, five 6-rowed and five 2-rowed barley cultivars were evaluated in 22 rainfed environments of northern Mediterranean Spain. Analyses of variance suggested that the genotypic Δ values were more consistent across environments than the genotypic yields. Genotype×environment (G×E) interaction for grain yield was further explored by fitting an AMMI (additive main effects and multiplicative interaction) model. The first 2 multiplicative axes were found significant. The AMMI2 model provided more accurate estimates of genotypic yields within environments than the conventional unadjusted means across replicates. AMMI2 estimates were used for input into cluster analysis, grouping environments that ranked gen...
27 CHAPTER 2 Theory and application of plant breeding for quantitative traits Javier Betrán, Jesú... more 27 CHAPTER 2 Theory and application of plant breeding for quantitative traits Javier Betrán, Jesú Moreno-González and Ignacio Romagosa ... Neo-Darwinian synthesis The theory of plant breeding rests on the work of two most influential biologists, Charles Darwin (18091882 ...
The food production and processing value chain is under pressure from all sides—increasing demand... more The food production and processing value chain is under pressure from all sides—increasing demand driven by a growing and more affluent population; dwindling resources caused by urbanization, land erosion, pollution and competing agriculture such as biofuels; and increasing constraints on production methods driven by consumers and regulators demanding higher quality, reduced chemical use, and most of all environmentally beneficial practices ‘from farm to fork’. This pressure can only be addressed by developing efficient and sustainable agricultural practices that are harmonized throughout the value chain, so that renewable resources can be exploited without damaging the environment. Bridges must, therefore, be built between the diverse areas within the food production and processing value chain, including bridges between different stages of production, between currently unlinked agronomic practices, and between the different levels and areas of research to achieve joined-up thinking within the industry, so that the wider impact of different technologies, practices and materials on productivity and sustainability is understood at the local, regional, national and global scales. In this article, we consider the challenges at different stages and levels of the value chain and how new technologies and strategies could be used to build bridges and achieve more sustainable food/feed production in the future.
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