To identify the resistance for powdery mildew from Haynaldia villosa in 4 wheat Haynaldia villosa lines,we analysed them and their parents(common wheat,Taiyuan 768 and Haynaldia villosa) by AFLP method.The results suggested that 4 wheat Haynaldia villosa lines were all translocations and their resistant genes come from Haynaldia villosa.From 3 markers probably close linked to the resistant gene and 7 markers it is infered that the lengths of DNAs from Haynaldia villosa are different.AFLP is a reliable an...