Evaluation of Resistance to Stem Rust and Identification of Sr Genes in Russian Spring and Winter Wheat Cultivars in the Volga Region

The Volga region is one of the main grain-producing regions Russia. Wheat stem rust caused by Puccinia graminis f. sp. tritici among most destructive fungal diseases wheat. Recently, its harmfulness has increased in region. In this regard, an analysis resistance and diversity Sr genes Russian wheat cultivars necessary. work, 126 (including 23 durum 103 bread cultivars) approved for use were evaluated their to two samples P. populations from different areas at seedling stage. Specific DNA primers used identify (Sr2, Sr24, Sr25, Sr26, Sr28, Sr31, Sr32, Sr36, Sr38, Sr39, Sr57). Highly resistant (30 126) identified. cultivars, Sr31 (in 19 cultivars), Sr24 cultivar), Sr25 15 spring Sr28 six Sr38 Sr57 combinations—Sr31 + Sr57, Sr24—were obtained results may be develop strategies breeding rust-resistant cultivars.