近两年来,对采自河北省的3个市6个县和北京地区的67份小麦多年生近缘植物种子(包括4个属,14个种),繁种后,温室育苗至1—2叶期接种小麦白粉病菌,结果有4个属11个种的54份材料发病,占参试份数的80.6%,用其中4个属10个种的43个已发病材料的白粉病菌,回接小麦感病品种京双16号后,隔离培养,全部发病回接成功。未接种的小麦对照,均未发病。各属种回接发病情况是:鹅观草属(Roeg In the past two years, 67 wheat perennial plant seeds (including 4 genera and 14 species) collected from 6 counties in 3 cities of Hebei Province and Beijing area were planted and cultivated in greenhouse to 1-2 leaves Inoculation of wheat powdery mildew, the results of 4 genera 11 species of 54 material incidence, accounting for 80.6% of the number of copies, with 4 of 10 species of 43 pathogens powdery mildew, back to the wheat Susceptible varieties Jingshuang 16, isolated culture, all the disease back to success. Unvaccinated wheat control, no disease. The species back to the incidence of the disease are: Roegneria (Roeg