The sources of the resistance to brown rust of winter soft wheat from the VIR collection for Western Siberia

The aim of the study is to identify the samples of winter wheat from the Collection of the N.I. Vavilov All-Russian Institute of Genetic Resources (VIR), resistant to brown rust for inclusion in crossing programs to breeding resistant varieties. The objects of the research were 103 wheat assessments originating from 13 countries. Field research was performed in the conditions of southern forest-steppe zone (Omsk) according to standard methods. Using the results of estimations of leaf rust severity the resistance indexes were calculated. The samples showed varying degrees of resistance to the disease. The largest number of stable variety samples was allocated from Russia, USA and Ukraine. The numbers with different resistance control showed high resistance to the disease. These are variety samples with identified monogens: KS-96-WGRC- 40 (K-65158, USA) - Lr41; CDC-Kestrel (K-64169,Canada) - Lr22a; Dmitry (K-65224, Krasnodar) and Artemida (K-64344, Ukraine) - Lr34 and samples are protecting by combinations of Lr genes: Vita (K-64155, Krasnodar) - Lr10 + Lr26 + Lr34; KS-8010-72-8 (K-63020, USA) - Lr26 + Lr24+; Doka (K-64156, Krasnodar) and Splav (63117, Vladimir) - Lr26 + Lr34; Graciya (K-64610, Krasnodar) - Lr10+ Lr26; Vostorg (K-64584, Krasnodar) - Lr34+; Melodya (K-65178, Belarus) - Lr26+...