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GrainGenes Reference Report: TAG-102-980

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Reference	TAG-102-980
Title	Detection of loci controlling seed dormancy on group 4 chromosomes of wheat and comparative mapping with rice and barley genomes
Journal	Theoretical and Applied Genetics
Year	2001
Volume	102
Pages	980-985
Author	Kato K Nakamura W Tabiki T Miura H Sawada S
Abstract	Summary: Three quantitative trait loci (QTLs) controlling seed dormancy were detected on group 4 chromosomes of wheat (Triticum aestivum L.) using 119 doubled haploid lines (DHLs) derived from a cross between AC Domain and Haruyutaka. A major QTL, designated QPhs.ocs-4A.1, was identified within the marker interval between Xcdo795 and Xpsr115 in the proximal region of the long arm of chromosome 4A. Two minor QTLs, QPhs.ocs-4B.2 on 4B and QPhs.ocs-4D.2 on 4D, were flanked by common markers, Xbcd1431.1 and Xbcd1431.2 in the terminal region of the long arms, suggesting a homoeologous relationship. These three QTLs explained more than 80% of the total phenotypic variance in seed dormancy of DHLs grown in the field and under glasshouse conditions. The AC Domain alleles at the three QTLs contributed to increasing seed dormancy. Comparative maps across wheat, barley and rice demonstrated the possibility of a homoeologous relationship between QPhs.ocs-4A.1 and the barley gene SD4, while no significant effects of the chromosome regions of wheat and barley orthologous to rice chromosome 3 region carrying a major seed dormancy QTL were detected
External Databases	http://link.springer-ny.com/link/service/journals/00122/bibs/1102006/11020980.htm
Keyword	[ Hide all but 1 of 45 ] ac alleles arms barley barley genome chromosome comparative genetics comparative map comparative mapping cross crosses detection domain dormancy doubled haploid doubled haploid lines field gene genome genomes glasshouse haploid haploid lines interval line linkage map loci long arm major genes map mapping marker plant science qtl quantitative trait quantitative trait loci region rice seed seed dormancy terminal region trait triticum triticum aestivum variance

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