安徽省油菜菌核病菌对多菌灵的抗药性监测

从安徽省望江、合肥、太湖、巢湖、蒙城、凤阳、灵壁、肥西、宣城、旌德等10个市县的油菜病茎上分离得到60个油菜菌核病菌菌株，并对其进行了抗药性监测。结果表明，有18株对多菌灵表现出不同程度的抗药性，上述各地均有抗药性菌株分布，但所占的比例不一，以蒙城系列（MCS）监测到的抗药性个体比例所占比例最大（66.7%），太湖（THS）最小（9.1%），但监测到THS-1对多菌灵的抗药性最强，高达743.8347mg/L。结果提示安徽省各地油菜菌核病菌已经对多菌灵产生了抗药性，且个别菌株已达到极高水平。

Monitoring on Carbendazim-resistance of Sclerotinia sclerotiorum Obtained from the Blight Stems of Rape in Anhui Province

The sensitivity of 60 isolates obtained from the blight stems of rape in Anhui province to carbendazim were tested in vitro. The results showed that 18 carbendazim-resistance isolates were found among them from 10 localities in Anhui province, but the proportion of the carbendazim-resistance isolates from 10 localities varied with the highest ratio 66.7% in Mongcheng and the lowest 9.1% in Taihu. The results also indicated that THS-1 obtained from Taihu has the highest resistance to carbendazim, with the EC50 value 743.8347mg/L. It suggested that the pathogen causing rape sclerotiniose in Anhui province had developed high resistance to carbendazim.