通过对辐射小麦抗白粉病突变体的同工酶酶谱分析,发现抗病品种与感病品种有不同的过氧化物酶酶谱型:感病品种比抗病品种多一条3A 带,3A 谱带的活性强弱与小麦的感病程度呈正相关,感病越重,活性越高,并在扫描曲线上有同样表现。实验结果表明:辐射能使感病基因发生突变,从而产生抗病突变体;同工酶测定可作为抗病性测定方法之一。 By isozymes analysis of the resistant wheat powdery mildew mutant, we found that there are different peroxidase zymograms in the resistant and susceptible cultivars: one 3A band and one 3A band The band activity and the degree of susceptibility to wheat was positively correlated, the more severe the disease, the higher the activity, and the same on the scan curve performance. The experimental results show that the radiation can make the susceptible gene mutated, and thus produce disease-resistant mutants. Isozyme assay can be used as one of the methods to determine disease resistance.