Sources and donors for soft wheat selection by resistance to yellow rust

Yellow rust (Puccinia striiformis f. Sp. Tritici) – is one of the most spread and most serious wheat diseases and one of the main factors reducing the yield of wheat. Epiphytotic diseases of wheat rust cover the entire continents leading to catastrophic crop failures. In order to control the stability, it is very important to have available molecular genetic markers linked to these symptoms. Using molecular markers STS, SCAR, carriers of resistant to yellow rust Yr18/Lr34 gens and effective Yr10, Yr15 gens were identified. Varieties Karasai, Moro, Naz, Mereke-70, Mereke-75, Sultan-2, Akdan with genom Yr10, varieties Mereke-70, Almaly, Arap, Karasai, Dinara with genom Yr-18 and only sort Raminal with genom Yr15 were identified among 30 investigated varieties. Varieties Karasai and Mereke-70 are the most valuable donors or resistance to yellow rust. Two resistance gens were identified in them. Varieties Karasai, Raminal, Sultan-2 demonstrated higher performances of some productivity elements in comparison with standard variety Almaly in the structural analysis. In order to increase the resistance to yellow rust, these genotypes were proposed to be used as markers in the program MAS (Marker assisted selection)