Journal ArticleDOI
Langdon durum disomic substitution lines and aneuploid analysis in tetraploid wheat
L. R. Joppa,N. D. Williams +1 more
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TLDR
A complete set of disomic substitution lines have been developed in the tetraploid wheat cultivar Langdon (Triticum turgidum L. var. durum) and their phenotypic characteristics, their cytogenetic behavior, and suggested methods for their use are described.Abstract:
A complete set of disomic substitution lines have been developed in the tetraploid wheat cultivar Langdon (Triticum turgidum L. var. durum). These aneuploid lines each have a pair of durum wheat homoeologues replaced by a pair of D-genome chromosomes transferred from 'Chinese Spring' hexaploid wheat. They can be used to determine the chromosomal location of genes, to transfer chromosomes from one cultivar or line of tetraploid wheat to another, to study the cytogenetics of tetraploid wheat, to determine gene linkages, and to identify chromosomes involved in translocations. Their phenotypic characteristics, their cytogenetic behavior, and suggested methods for their use are described.Key words: cytogenetics, monosomic, chromosome transmission, telosomic, chromosome substitution.read more
Citations
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Genome analysis at different ploidy levels allows cloning of the powdery mildew resistance gene Pm3b from hexaploid wheat.
TL;DR: It is demonstrated that the combined analysis of genomes from wheat species with different ploidy levels can be exploited for positional cloning in bread wheat and that the candidate gene, a member of the coiled-coil nucleotide binding site leucine-rich repeat (NBS-LRR) type of disease resistance genes, is the Pm3b gene.
Journal ArticleDOI
Genetic variation for improving the salt tolerance of durum wheat
TL;DR: Low Na+ accumulation and high K+/Na+ discrimination of similar magnitude to that of bread wheat was found in the sub-species durum, and selections have the potential for improving salt tolerance in durum wheat breeding programs.
Journal ArticleDOI
Mapping of the K(+)/Na (+) discrimination locus Kna1 in wheat.
TL;DR: Results of the QTL analysis, based on the K+/Na+ ratios in the young leaves of greenhousegrown plants and flag leaves of field-grown plants, agreed with the position of Knal determined as a qualitative trait, and several aspects of gene introgression by manipulation of the Ph1 locus are discussed.
Journal ArticleDOI
Rapid Genome Divergence at Orthologous Low Molecular Weight Glutenin Loci of the A and Am Genomes of Wheat
Thomas Wicker,Nabila Yahiaoui,Romain Guyot,Edith Schlagenhauf,Zhong-Da Liu,Jorge Dubcovsky,Beat Keller +6 more
TL;DR: The striking differences in the intergenic landscape between the A and Am genomes that diverged 1 to 3 million years ago provide evidence for a dynamic and rapid genome evolution in wheat species.
References
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Journal ArticleDOI
Cytogenetic Studies with Polyploid Species of Wheat. II. Additional Chromosomal Aberrations in Triticum Vulgare.
Journal ArticleDOI
Genetic analyses of certain characters in common wheat using whole chromosome substitution lines
John Kuspira,John Unrau +1 more
TL;DR: Three sets of substitution lines of the spring wheat variety Chinese with chromosomes from the donor varieties Thatcher, Hope and Timstein were used to study the genetics of awning, earliness, lodging, plant height, spike density, 1000-kernel weight and yield.
Book ChapterDOI
Biometrical Analysis Using Chromosome Substitutions within a Species
TL;DR: The development of appropriate aneuploid material in a polyploid species enables the substitution of single chromosomes from one variety into another, and the reduction of many determinants to a comparative few allows a level of sophisticated technique to be introduced into the study of polyploids organisms.
Journal ArticleDOI
Effect of Chromosome 1B on Gluten Strength and Other Characteristics of Durum Wheat 1
TL;DR: It was concluded that chromosome IB of durum wheat is far more important than any other chromosome in determining gluten strength.
Journal ArticleDOI
D-Genome Substitution-Monosomics of Durum Wheat 1
L. R. Joppa,N. D. Williams +1 more