小麦品种保丰104具有良好的抗白粉病特性。为了解其抗病性的遗传基础,利用保丰104/辽春10号得到F2分离群体和F2:3家系,对其苗期抗病性进行了鉴定和遗传分析,并对其所携带的抗病基因进行了独立性测验及分子标记定位。结果表明,保丰104可能含有两个抗白粉病基因,其中一个抗白粉病基因与Xcfd81紧密连锁,可能是Pm2,另一个与CINAU127紧密连锁,可能是Pm6。 Bao Feng 104 wheat varieties have good resistance to powdery mildew characteristics. In order to understand the genetic basis of disease resistance, F2 segregation population and F2: 3 families were obtained using BaoFeng 104 and Liaochun 10, and their disease resistance was identified and analyzed at seedling stage. Disease genes were tested for independence and molecular markers. The results showed that BaoFeng 104 may contain two powdery mildew resistance genes. One of the powdery mildew resistance genes is closely linked to Xcfd81, probably Pm2, and the other is closely linked to CINAU127, probably Pm6.