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The high yield potential of winter wheats cannot be realized due to disease pressure under field conditions. One of the most harmful of such diseases is stem rust, hence the constant search for sources of resistance and the development of new varieties resistant to stem rust is of great relevance. This study deals with the identification of stem rust resistance genes in a collection of winter wheats grown in Southern Russia. This genepool has not been studied yet. A total of 620 samples of winter soft wheat from various ecological and geographical zones were tested under field conditions. To identify the specific genes or alleles responsible for resistance, all samples were genotyped using PCR. As a result, the groups of resistant samples, carrying the  Sr2 ,  Sr31 ,  Sr38  and  Sr44  genes in various combinations, were identified. Most of the stem rust resistance was provided by the presence of the effective  Sr44  gene. This information can be used in the future breeding work for stem rust resistance.

Identification of Stem Rust Resistance Genes in the Winter Wheat Collection from Southern Russia