Detection of Stripe Rust Resistant Gene Yr26 with SSR Markers in Wheat Cultivars of Huanghuai Region

Molecular marker was combined with resistance assessments to stripe rust on field by inoculating with race CYR32 to understand the distribution of the gene Yr26.A total of 239 wheat cultivars and lines from Huanghuai wheat region were detected by SSR markers ,Xgwm11 and Xgwm18,which closely linked to Yr26.The result showed that 35 cultivars /lines had the Xgwm11 marker or Xgwm18 marker for Yr26.Among the resistant cultivars/lines,31 are resistant to stripe rust,4 susceptible to stripe rust.The results of molecular marker and resistance assessments to stripe rust were very similar.Therefore,the SSR markers can be used to detect gene Yr26.Combined molecular markers and resistance assessment in the field,there are 31 cultivars/lines with Yr26 gene which is 30.39% of 102 resistance cultivars/lines to CY32.