МРНТИ 68.37.31                                                                                 №1 (2019г.)

Rsaliev A.S.,Pakhratdinova Zh.U.,Amirkhanova N.T.,Iskakova G.Sh.

Wheat leaf rust, caused by Puccinia triticina Erikss, is a dangerous disease causing serious economic damage in the majority of the countries of the world. Data on epidemics of wheat leaf rust in Kazakhstan are presented in this review. The main traditional and up-to-date methodical approaches which are used for studying of pathosystem interaction «wheat – rust» are analyzed. Methods of determination of racial structure of fungus are presented, and old and up-to-date kits of varieties-differentiators for determination of race of P. triticina are presented. Efficiency of use of the molecular markers for studying of pathogen races and for definition of genes carriers of wheat resistance to leaf rust is discussed. Historical and modern data on studying race composition of the pathogen in Kazakhstan are summarized. It has been shown that there is a need to continue studies on intraspecies structure of the disease agent population in Kazakhstan with the use of the modern differential set, on determination of race composition and ways of emergence of new races potentially dangerous for commercial wheat varieties.
Key words: wheat, leaf rust, resistance, race, Lr-genes, virulence.