Virulence survey of leaf rust caused by Puccinia triticina eriks, and postulated genes in 17 Egyptian wheat cultivars [electronic resource].

Includes references.

Leaf rust (Puccinia triticina) collections were obtained from rust-infected wheat leaves throughout the survey of wheat fields and nurseries in the East Delta region in Egypt (Damietta and Dakahlia Governorates) in order to determine the virulence of wheat leaf rust fungus in 2010/11. Single uredinial isolates (56 in total) were derived from twenty two wheat leaf rust collections and tested for virulence phenotype at seedling stage on 17 Egyptian wheat cultivars and 20 lines of Thatcher wheat that conformed near-isogenic for leaf rust resistance genes i.e. Lr1, Lr2a, Lr2c, Lr3; Lr9, Lr16, Lr24, Lr26; Lr3ka, Lr11, Lr17, Lr30; Lr10, Lr18, Lr21, Lr2b; Lr14b, Lr15,Lr35 and Lr42. Thirty three virulence formulae of P. triticina were found. Virulence phenotype TKTT, which is virulent to each of the tested resistance genes except Lr9 only, was the first most common virulent phenotype.

Summary in Arabic.

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