In this study, Genes resistant to powdery mildew was introduced from Haynaldia villosa to wheat through crossing ,radiation and young embryo culture. High yield varieties and new germplasm with good agronomic characters resistant to powdery mildew were selected. By AFLP analysis , four lines resistant to powdery mildew were all translocation lines and resistant genes came from Haynaldia villosa ,Three markers probably closely linked to the resistant gene were obtained.