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小麦品种里勃留拉、咸农4号和阿勃为慢白粉病品种,它们的AUDPC、单菌落面积、单菌落日产孢量和最终病情指数,都显著低于对照品种山前;小偃6号属中慢品种,它的最终病情指数和AUDPC与对照间的差异,分别为极显著和显著。用8个白粉菌小种接种表明,这4个抗病品种属非专化抗性。试验和分析表明,只需在倒2叶上测定最终病情指数和菌落大小,即可鉴定小麦品种的慢白粉病抗性。
The wheat cultivars Libiulla, Xiannong 4 and Aberdeen were slow powdery mildew cultivars. Their AUDPC, single colonies area, single colonies per day, and the final disease index were significantly lower than those of the control cultivar Xiaoyan 6 The moderately slow breed, whose final disease index and the differences between AUDPC and controls were extremely significant and significant, respectively. Vaccination with eight powdery mildew species showed that the four resistant varieties were non-specific resistance. Experiments and analyzes show that the susceptibility to the powdery mildew of the wheat cultivars can be identified by measuring the final disease index and the size of the colonies on the last 2 leaves.