Stripe rust, caused by Puccinia striiformis f.sp.tritici (Pst), is a destructive foliar disease of wheat worldwide.Sustainable control this disease is achieved preferably by deploying stripe rust resistance genes in wheat cultivars.In our previous study, Baidatou, a Chinese wheat landrace, has shown good aduh-plant resistance (APR) to wheat stripe rust in Gansu Province where it is the hotspot for stripe rust epidemics in China.To elucidate the genetic basis of APR to stripe rust in Baidatou, a cross was created between Baidatou and Mingxian 169, which is susceptible to all the known Chinese Pst races.F1, F2 and F2∶ 3generations derived from the cross Mingxian 169/Baidatou were inoculated with the most prevalent Chinese Pst race CYR33 at adult plant stage in field in Yangling, Shaanxi Province, during 2009~ 2010 and 2010 ~2011 crop seasons, respectively.The results showed that the resistance in Baidatou was conferred by a single dominant gene.