1981年对张家口农家谷子品种755份进行粟粒黑粉病抗病性接菌鉴定时,绝大多数品种只在穗部表现黑粉粒症状,发现“三变化”等3个品种有部分植株表现叶片深绿、密集上冲,分蘖猛增、丛矮、抽穗率低、并且多数病株从叶鞘中部抽出小穗等现象。1982年接菌种植这3个品种时仍有丛矮株出现。从1981至1985年对2322份品种资源进行粟粒 In 1981, 755 farmer millet varieties in Zhangjiakou were identified as resistant to millet mildew. Most of the cultivars showed black millet symptom only in the ear, and some of the three cultivars showed “three changes” Dark green, intensive on the red, soaring tillers, short clumps, heading rate is low, and most of the diseased leaves from the middle of the sheath spikelet and so on. In 1982 when the inoculation of the three cultivars was still plexiform appeared. From 1981 to 1985 milled grains were harvested from 2322 species