白粉病是栽培小麦最流行的病害中危害性最大的病害之一,用化学药剂防治白粉病存在很多困难。世界上小麦抗白粉病育种虽然规模很大,但没有多大成效,白粉病仍然造成了小麦产量的损失。这就需要弄清种植的小麦种感病原因和修改抗白粉病育种的计划。过去,在分析散黑穗病病原体与小麦和山羊草的基因型的相互作用中,发现小麦各个种 Powdery mildew is one of the most harmful diseases among the most prevalent diseases in cultivated wheat. There are many difficulties in controlling powdery mildew with chemical agents. Despite the large scale of wheat resistance to powdery mildew in the world, the success of the powdery mildew still causes the loss of wheat yield. This requires clarification of the causes of the cultivated wheat and the plan to modify the resistance to powdery mildew. In the past, in analyzing the interactions between the pathogen of smut and the genotypes of wheat and goatgrass, it was found that each of the wheat species