title: Mapping genes for resistance to barley stripe rust (Puccinia striiformis f. sp. hordei).
abstract: Two genes conferring resistance to the barley stripe rust found in Mexico and South America, previously identified as race 24, were mapped to the M arms of barley chromosomes 7 and 4 in a doubled haploid population using molecular markers and the quantitative trait loci (QTL) mapping approach. The resistance gene on chromosome 7 had a major effect, accounting for 57% of the variation in disease severity. The resistance gene on chromosome 4 had a minor effect, accounting for 10% of the variation in trait expression. Two pairs of restriction fragment length polymorphism markers are being used to introgress the resistance genes to North American spring barley using molecular marker-assisted backcrossing.
authors.affiliation: Department of Crop and Soil Science, Oregon State University, 97331-3002, Corvallis, OR, USA.
authors.forename: F Q
authors.initials: FQ
authors.lastname: Chen
authors.forename: D
authors.initials: D
authors.lastname: Prehn
authors.forename: P M
authors.initials: PM
authors.lastname: Hayes
authors.forename: D
authors.initials: D
authors.lastname: Mulrooney
authors.forename: A
authors.initials: A
authors.lastname: Corey
authors.forename: H
authors.initials: H
authors.lastname: Vivar