番茄早疫病菌对杀菌剂的敏感性研究  

Sensitivity of Alternaria solani Sorauer to Several Fungicides

作　　者：张洪[1] 刘慧平[1] 韩巨才[1] 卢崇良[1] 

机构地区：[1]山西农业大学农学院,山西太谷030801

出　　处：《山西农业大学学报（自然科学版）》2006年第1期36-37,40,共3页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：山西省科技攻关项目(31011-4;051045);山西省留学基金资助项目(200441);山西省自然科学基金资助项目(20021088)

摘　　要：为了选择可有效防治番茄早疫病菌的杀菌剂,本文采用组织分离法从罹病叶片分离出病原菌,并通过FAO推荐的菌落直径法测定其对6种杀菌剂的敏感性。结果表明:番茄早疫病对腐霉利最敏感,其平均EC50为1.24μg.mL-1,对杀毒矾、代森锰锌中度敏感,其平均EC50分别为32.64μg.mL-1、56.38μg.mL-1。对百菌清、甲霜灵、异菌脲低度敏感,其平均EC50分别为263.68μg.mL-1、443.33μg.mL-1、605.44μg.mL-1。由此可见,腐霉利对番茄早疫病的防治在试验药剂中效果最好。Eight isolates were obtained from tomato diseased leaves and their sensitivities to six fungicides were surveyed. The result showed that they were most sensitive to procymidone （EC50 1.24 μg·mL^-1 ）, moderately sensitive to oxadixyl and mancozeb with an EC50 value of 32. 64 μg·mL^-1 , 56. 38 μg·mL^-1 separately. They were relatively less sensitive to chlorthalonil, metalaxyl, iprodione with an ECs0 value of 263.68 μg·mL^-1 , 443. 33 μg·mL^-1 , 605.44 μg·mL^-1 . The result showed that procymidone was very effective preventing Alternaria solani Sorauer in these fungicides.

关 键 词：番茄早疫病菌 杀菌剂 敏感性 有效中浓度(EC50) 

分 类 号：S481.9[农业科学—农药学]