Journal article
New molecular markers linked to qualitative and quantitative powdery mildew and scald resistance genes in barley for dry areas



Publication Details
Authors:
Sayed, H.; Backes, G.; Kayyal, H.; Yahyaoui, A.; Ceccarelli, S.; Grando, S.; Jahoor, A.
Publication year:
2004
Journal:
Euphytica
Pages range:
225-228
Volume number:
135
ISSN:
0014-2336

Abstract
A partial genetic linkage map was constructed on 71 doubled-haploid lines derived from a cross between the barley lines Tadmor and WI2291 with 181 molecular markers. The segregating population was used to detect markers linked to the gene Mlg conferring resistance to powdery mildew ( Erysiphe graminis f. sp. hordei) and to genes for quantitative resistance to scald (Rhynchosporium secalis). The gene Mlg on chromosome 4H was flanked by two AFLP markers at a distance of 2.0 and 2.4 cM, respectively. QTLs for resistance to scald were detected on chromosomes 2H and 3H. This association of molecular markers with qualitative and quantitative disease resistance loci represents a valuable starting-point for marker-assisted selection.


Keywords
Disease, Disease resistance, Erysiphe graminis, Hordeum vulgare, Kopplungskarte, Krankheitsresistenz, Linkage map, Marker-assisted selection, Marker-gestützte Selektion, Mehltau, Mlg, Powdery mildew, QTL, QTL-Analyse, QTL localisation


Authors/Editors

Last updated on 2019-25-07 at 11:17