马铃薯晚疫病菌对甲霜灵敏感性及交配型测定  

Detection of Mating Type,Pathogenicity and Sensitivity to Metalaxyl of Phytophthora infestans

作　　者：姚国胜[1] 吕国朝 杨志辉[3] 刘桂云[4] 朱杰华[3] 

机构地区：[1]河北省廊坊市农林科学院,河北廊坊065000 [2]石家庄市农科院,河北石家庄050041 [3]河北农业大学植物保护学院,河北保定071001 [4]河北省廊坊市第三中学,河北廊坊065000

出　　处：《华北农学报》2007年第B10期260-262,共3页Acta Agriculturae Boreali-Sinica

基　　金：河北省自然科学基金资助项目(C200400379)

摘　　要：对2004年7月采自河北省围场县甘沟门、棋盘山、哈里哈村和围场县马铃薯研究所试验地及温室的26个马铃薯晚疫病菌株进行甲霜灵敏感性评价。敏感性测定结果表明,在26个被测菌株中高抗菌株23个,占被测菌株的88.5%;高度敏感菌株、敏感菌株和中抗菌株各1个,分别占被测菌株的3.85%。对甲霜灵高抗菌株在病菌群体中占绝对优势,而且抗性程度很高,浓度为100μg/mL的甲霜灵对46.2%的被测菌株没有任何抑制效果。交配型的测定结果表明2004年采自河北省围场县的26个菌株全部为A1交配型。The sensitivity to Metalaxyl and pathogenicity of 26 Phytophthora infestans isolates collected from Weichang County, Hebei in 2004 was evaluated. The results suggested that 23 strains were highly resistant to the fungicide Metalaxyl, accounting for 88.5 %, the others were highly sensitive, sensitive and intermediately resistant to Metalaxyl, respectively, each accounting for 3.85 %. The P. infestans population in 2004 was dominated by the strains with highly resistance to Metalaxyl. Metalaxyl, even of the concentration of 100 μg/mL, could not inhibit the growth of 46.5 % tested strains.The result of mating type test indicated that all the isolates from Weichang in 2004 were A1.

关 键 词：马铃薯晚疫病菌 甲霜灵 敏感性 交配型 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]