徐州地区草莓灰霉病菌对腐霉利的抗药性研究

Studies on Resistance of Botrytis cinerea of Strawberry in Xuzhou to Procymidone

为明确徐州地区草莓灰霉病菌对腐霉利的抗药性现状,2014~2015年在徐州8个区县草莓产区分别采集草莓灰霉病菌(Botrytis cinerea)样品,采用菌丝生长速率法测定93个草莓灰霉病菌菌株对腐霉利的抗药性。结果表明,检测的抗性菌株比例高达54.83%,且以中抗菌株为主,占34.40%。不同区县抗性菌株抗性频率不同,其中铜山区、贾汪区、新沂、沛县抗性频率较高,均在70%以上。说明徐州草莓灰霉病菌对腐霉利已产生抗药性,抗性水平中抗,且抗性菌株较普遍,应避免或限制连续使用腐霉利类的杀菌剂。

To clarify the resistance of Botrytis cinerea of strawberry in Xuzhou to procymidone, the mycelium growthrate method was used to test the resistance to procymidone at distinctive concentrations in 93 isolates of B. cinerea from 8 counties of Xuzhou between 2014 and 2015. The results showed that the resistance frequency of B.cinerea inXuzhou to procymidone was 54.83%, and middle-level resistance frequency to procymidone was 34.40%. The resis-tance frequency of isolates from Tongshan District, Jiawang District and Pei County all exceeded 70%. The middle-level resistance to procymidone of B. cinerea from strawberry in Xuzhou was common. The procymidone should bereplaced or rotated in strawberry production in Xuzhou.