Disease as a limiting factor for obtaining a high crop of winter soft wheat under the conditions of the Nakhchivan Autonomous Republic

During 2015-2018, we studied 497 varieties of soft wheat from 21 countries of the world belonging to the four varieties: Erythrospermum (Koern.) Mansf., Ferrugineum (Alef.) Mansf., Graecum (Koern.) Mansf. and Lutescens (Alef.) Mansf. Over the years of the study, the degree of infection of soft wheat samples to diseases (Bunt smut ( Tilletia caries ), Mealy race ( Erysiphe graminis f. sp. Tritiсi ), yellow (banded) rust ( Puccinia striiformis West.)) grain crops. Was studied 11 variety specimens Graecum varieties (Koern.) Mansf.; 19 variety specimens belonging to the variety Lutescens (Alef.) Mansf.; of the 59 variety specimens belonging to the variety Erythrospermum (Koern.) Mansf., and 7 variety specimens belonging to the variety Ferrugineum (Alef.) Mansf. with increased resistance to the powdery race. Also, 101 variety specimens of common smut and 79 variety specimens rust samples resistant were determined.