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采用拌种离体叶段法对我国6个省(市)分离的小麦白粉菌108个和104个单孢堆菌株分别对三唑酮和喹氧灵的敏感性进行了测定,并对两者之间的交互抗性进行分析。结果表明,供试菌株对三唑酮的平均EC50为94.34mg/L,平均抗性水平达45.14倍,有97.25%菌株产生了抗性,其中高抗菌株(抗性水平>40)占35.19%,中抗菌株占55.56%。河北菌株的抗性水平明显高于其他五省。小麦白粉病菌群体对喹氧灵的敏感基线为0.0059mg/L,且与三唑酮无交互抗性。此研究信息可为小麦白粉病抗药性持续治理措施的制定以及杀菌剂生产和使用策略提供依据。
The in vitro leaf segment method was used to determine the sensitivity of triadimefon and quinolone to 108 and 104 single strains of powdery mildew isolated from 6 provinces (cities) in China. The interaction between the resistance analysis. The results showed that the average EC50 of the tested strains against triadimefon was 94.34mg / L, the average level of resistance was 45.14 times, and 97.25% strains were resistant, of which 35.19% were high resistant strains (resistance level> 40) , The antibacterial strains accounted for 55.56%. Hebei strains were significantly higher than the other five provinces. The sensitivity of wheat powdery mildew population to quinoline was 0.0059mg / L, and there was no interaction with triadimefon. The information provided in this study may provide a basis for the development of sustainable management of resistance to powdery mildew and the strategies for the production and use of bactericides.