Genetic mapping of QTL controlling tissue-culture response on chromosome 2B of wheat (Triticum aestivum L.) in relation to major genes and RFLP markers

Three quantitative trait loci (QTL) for tissue-culture response (Tcr) were mapped on chromosome 2B of hexaploid wheat (Triticum aestivum L.) using single-chromosome recombinant lines. Tcr-B1 and Tcr-B2, affecting both green spots initiation and shoot regeneration, were mapped in relation to RFLP mar...

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Bibliographic Details
Published in:Theoretical and applied genetics 1997-06, Vol.94 (8), p.1047-1052
Main Authors: Ben Amer, I.M, Korzun, V, Worland, A.J, Borner, A
Format: Article
Language:English
Subjects:
Biological and medical sciences
chromosome mapping
Chromosomes
Classical genetics, quantitative genetics, hybrids
Fundamental and applied biological sciences. Psychology
Gene loci
Genetic aspects
Genetics of eukaryotes. Biological and molecular evolution
Genomics
Hordeum vulgare
initiation
linkage (genetics)
loci
major genes
Physiological aspects
Plant genetics
Pteridophyta, spermatophyta
Quantitative trait loci
quantitative traits
regenerative ability
restriction fragment length polymorphism
segregation
shoots
tcr-b1 locus
tcr-b2 locus
tcr-b3 locus
tissue culture
Triticum aestivum
Vegetals
Wheat
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Summary:Three quantitative trait loci (QTL) for tissue-culture response (Tcr) were mapped on chromosome 2B of hexaploid wheat (Triticum aestivum L.) using single-chromosome recombinant lines. Tcr-B1 and Tcr-B2, affecting both green spots initiation and shoot regeneration, were mapped in relation to RFLP markers in the centromere region and on the short arm of chromosome 2B, linked to the photoperiod-response gene Ppd2. A third QTL (Tcr-B3), influencing regeneration only, was closely related to the disease resistance locus Yr7/Sr9g on the long arm of chromosome 2B. The homoeologous relationships to the tissue-culture response loci Qsr, Qcg and Shd of barley are discussed. A possible influence of the earliness per se genes of wheat and barley is suggested.
ISSN:0040-5752
1432-2242
DOI:10.1007/s001220050513