玉米叶斑病菌对23种杀菌剂的敏感性测定  

Sensitivity Determination of Maize Leaf Spot Pathogens to 23 Fungicides

作　　者：白庆荣[1] 吕来燕[1] 翟亚娟[2] 高洁[1] 

机构地区：[1]吉林农业大学农学院,长春130118 [2]辽源市农业科学院,辽源136200

出　　处：《吉林农业大学学报》2011年第5期485-490,共6页Journal of Jilin Agricultural University

基　　金：吉林省农业综合开发科技示范项目[2008(62)]

摘　　要：采用孢子萌发法测定了玉米大斑病菌(Exerohilum turcicum)、玉米弯孢霉叶斑病菌(Curvularia lunata)、玉米灰斑病菌(Cercospora zeae-maydis)孢子萌发对23种杀菌剂的敏感性;抑菌圈法测定了玉米大斑病菌和玉米弯孢霉叶斑病菌菌落生长对各药剂的敏感性。结果表明:3种病菌孢子萌发及玉米大斑病菌和玉米弯孢霉叶斑病菌菌落生长对70%代森锰锌WP、50%福美双WP、50%翠贝DF敏感性较高,0.1 mg/L≤EC50≤2.0 mg/L,抑菌圈直径>15 mm;3种病菌孢子萌发对50%速克灵WP、72%霜疫罢WP、75%达科宁WP、25%阿米西达SC、77%杜邦可杀得WP、400 g/L福星EC、40%信生WP的敏感性较好,0.1 mg/L≤EC50≤5.0 mg/L。The sensitivity of the pathogens of 3 maize leaf spots（Exerohilum turcicum,Curvularia lunata and Cercospora zeae-maydis）to 23 fungicides was determined by sporegermination method.The sensitivity of the colony growth of E.turcicum and C.lunata to 1 000 mg/L each fungicide was tested by inhibition zone method.The results showed that： the spore gemination of these 3 pathogens and the colony growth of E.turcicum and C.lunata was more sensitive to 70% Mancozeb WP,50% Thiram WP and 50% Kresoxim-methyl DF（0.1 mg/L≤EC50≤2.0 mg/L,the diameter of inhibition zone15 mm）.The spore gemination of these 3 pathogens was sensitive to 50% Procymidone WP,72% Cymoxanil·MancozebWP,75% Chlorothalonil WP,25% Azoxystrobin SC,77%cocide WP,400 g/L Flusilazole EC and 40% Myclobutanil technical WP（0.01 mg/L≤EC50≤5.0 mg/L）.The results of this research provided fundamental data for controlling maize leaf spots in northeast China.

关 键 词：玉米大斑病 玉米弯孢霉叶斑病 玉米灰斑病 杀菌剂 敏感性测定 

分 类 号：S435.131[农业科学—农业昆虫与害虫防治] S482.2[农业科学—植物保护]