Inheritance of Crown Rust Resistance in Avena sterilis L. from Israel1

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Abstract
The inheritance of resistance in four collections of Avian sterilis L. from Israel (D137, F169, F288, and F290) to races 239, 264, 290, 326, 330, and 332 of crown rust, Puccinia coronata Cda. vat. avenae Erikss, was investigated. Three of the collections (D137, F169, and F290) each had a gene conferring rust resistance to all six races, and these genes were independent. The gene in D137 was Pc35 while the genes in F169 and F290 were designated Pc45 and Pc46, respectively. Each of these three collections also contained an additional resistance gene. F169B and F290B were attacked by races 264 and 290, while D137B was attacked by these races as well as race 326.Genetic analysis of F288 indicated that one gene (F288A) confers resistance to races 239, 290, 326, and 330 but not to races 332 and 264, while a second gene (F288B) confers resistance to race 239, but not to the other five races.All the resistance genes from the four collections were dominant.

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