ISSN:
1617-4623
Keywords:
BARE-1 retrotransposon Barley Net blotch resistance Linkage mapping Quantitative trait locus (QTL)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract. Net blotch, which is caused by the fungus Pyrenophora teres Drechs. f. teres Smedeg., presents a serious problem for barley production worldwide, and the identification and deployment of sources of resistance to it are key objectives for many breeders. Here, we report the identification of a major resistance gene, accounting for 65% of the response variation, in a cross between the resistant line CI9819 and the susceptible cv. Rolfi. The resistance gene was mapped to chromosome 6H with the aid of two recently developed systems of retrotransposon-based molecular markers, REMAP and IRAP. A total of 239 BARE-1 and Sukkula retrotransposon markers were mapped in the cross, and the 30-cM segment containing the locus with significant resistance effect contained 26 of the markers. The type and local density of the markers should facilitate future map-based cloning of the resistance gene as well as manipulation of the resistance through backcross breeding.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s004380000326
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