INHERITANCE OF RESISTANCE TO STEM RUST RACES 15B AND 56 IN EIGHT CULTIVARS OF COMMON WHEAT

Author:

KNOTT D. R.,SRIVASTAVA J. P.

Abstract

Eight cultivars of common wheat showing good stem rust resistance in International Spring Wheat Rust Nurseries were selected. They were backcrossed to the susceptible cultivars Marquis and Little Club and the inheritance of their resistance to races 15B and 56 was studied. The major genes carried by the cultivars had all been identified previously. The cultivars and the major genes carried by them were as follows: Andes Sib (Sr8, Sr9?), Colotana (Sr8), Giza-Hegazy (Sr7a, Sr9a or b) Huascav (Sr9d), S.A. 112/52 (Sr9d), Bonza Selection (Sr6), Kuntur (Sr6, Sr7a) and Maribal Marina (Sr7a). In addition, four of the cultivars carried one or more genes giving very moderate resistance to one or both of the races.

Publisher

Canadian Science Publishing

Subject

Horticulture,Plant Science,Agronomy and Crop Science

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