Genetic Identification of Yellow Rust Disease Resistance in Bread Wheat (Triticum aestivum L.) Samples Using DNA Markers

다국어 초록 (Multilingual Abstract)

In this study, molecular-genetic analyses were carried out to identify resistance to yellow rust (Puccinia striiformis f. sp. tritici) in soft wheat (Triticum aestivum L.) samples.
Yellow rust is one of the most destructive diseases of wheat worldwide, causing significant yield losses and posing a serious threat to global food security, particularly under changing climatic conditions. The disease is also highly prevalent in Central Asian countries, including Uzbekistan and Tajikistan, where wheat is a staple crop and ensuring stable production is of strategic importance. A total of 68 wheat genotypes were examined and genotyped using 42 highly polymorphic DNA markers. Based on the obtained phenotypic and genotypic data, association analysis was performed using the TASSEL and STRUCTURE programs. To identify genetic associations, GLM (General Linear Model) and MLM (Mixed Linear Model) statistical models were applied. The analysis revealed that the following markers showed significant and reliable associations with yellow rust resistance: Barc0187 (p=0.0040), Gwm340 (p=0.0043), Barc008 (p=0.0132), and Gwm111 (p=0.0147). These markers are recommended as reliable molecular indicators for identifying yellow rust-resistant genotypes and for improving marker-assisted selection (MAS) strategies in future wheat breeding programs.