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An Integrated Resource for Barley Linkage Map and Malting Quality QTL Alignment

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Barley (Hordeum vulgare L.) is an economically important model plant for genetics research. Barley is currently served by an increasingly comprehensive set of tools for genetic analysis that have recently been augmented by high-density genetic linkage maps built with gene-based single nucleotide polymorphisms (SNPs). These SNP-based maps need to be aligned with earlier generation maps, which were used for quantitative trait locus (QTL) detection, by integrating multiple types of markers into a single map. A 2383 locus linkage map was developed using the Oregon Wolfe Barley (OWB) Mapping Population to allow such alignments. The map is based on 1472 SNP, 722 DArT, and 189 prior markers which include morphological, simple sequence repeat (SSR), Restriction Fragment Length Polymorphism (RFLP), and sequence tagged site (STS) loci. This new OWB map forms, therefore, a useful bridge between high-density SNP-only maps and prior QTL reports. The application of this bridge concept is shown using malting-quality QTLs from multiple mapping populations, as reported in the literature. This is the first step toward developing a Barley QTL Community Curation workbook for all types of QTLs and maps, on the GrainGenes website. The OWB-related resources are available at OWB Data and GrainGenes Tools (OWB-DGGT) (
Szucs, Peter , Blake, Victoria C. , Bhat, Prasanna R. , Chao, Shiaoman , Close, Timothy J. , Cuesta-Marcos, Alfonso , Muehlbauer, Gary J. , Ramsay, Luke , Waugh, Robbie , Hayes, Patrick M.
Hordeum vulgare , malting barley , chromosome mapping , quantitative trait loci , malting quality , microsatellite repeats , restriction fragment length polymorphism , single nucleotide polymorphism , loci
p. 134-140.
Includes references
Plant genome 2009 July, v. 2, no. 2
Journal Articles, USDA Authors, Peer-Reviewed
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