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Genes for resistance to powdery mildew in E uropean winter barley cultivars registered in the C zech R epublic and S lovakia to 2010
Author(s) -
Dreiseitl Antonín
Publication year - 2013
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12108
Subject(s) - powdery mildew , cultivar , biology , mildew , hordeum vulgare , locus (genetics) , gene , plant disease resistance , horticulture , pathogen , erysiphe graminis , botany , poaceae , genetics
Abstract In central E urope, winter barley is infected by a broader spectrum of pathogens than spring barley. However, the dominant disease on susceptible cultivars is powdery mildew. The objective of this contribution was to postulate resistance genes in cultivars registered in the C zech R epublic and S lovakia from 1993 to 2010 using a set of 40 isolates of the barley powdery mildew pathogen. Seedlings of 42 E uropean cultivars were tested, and 15 known resistance genes were postulated namely, Ml a6 , Ml a7 , Ml a12 , Ml a13 , Ml aRu4, Ml g , Ml h , MlL a , Ml ra , Ml ( Ch ), Ml ( Dr2 ), Ml ( IM 9 ), Ml ( Lo ), Ml ( Ru2 ) and Ml ( S t ). Two unknown resistances were detected, one in cultivars G ilberta, M irko and P olana, and another in R icus. Three cultivars ( C ampanile, C arrero and M irko) were heterogeneous for mildew response. The most frequent genes were M lra and M lh , which were found in 25 and 14 cultivars, respectively. Genes located at the M la locus were present in 14 cultivars; 11 of these cultivars carried Ml a6 . No resistance gene was detected in H anna. Previously unknown resistances will be further characterized.