ARS | Publication request: Coordinator’s Report: Chromosome 7H

Submitted to: Barley Genetics Newsletter
Publication Type: Other
Publication Acceptance Date: June 10, 2009
Publication Date: October 1, 2009
Citation: Dahleen, L.S. 2009. Coordinator’s Report: Chromosome 7H. Barley Genetics Newsletter. 39:50-55

Technical Abstract: This report summarizes published research across the world in 2008 that placed additional markers, genes and quantitative trait loci (QTLs) on barley chromosome 7H. An extensive expression marker map was created and additional single nucleotide polymorphism markers were developed. Mapping research located genes and QTL for morphological traits, resistance to several diseases, preharvest sprouting and various malting quality traits. Biparental and association mapping were used to locate chromosomal regions for dryland and drought adaptation. Studies continued to examine QTLs in crosses between cultivated and wild barley with the goal of identifying new genes for barley improvement. Marker comparisons between older landraces and cultivars with newer cultivars indicate that fewer alleles are used in breeding over time, but the older germplasm can contain important genes to improve adaptation.