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13种杀菌剂对玉米大斑病菌和弯孢霉叶斑病菌的毒力测定 预览 被引量:1

Toxicity determination of 13 fungicides to Exserohilum turcicum and Curvularia lunata
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摘要 为了筛选出高效、低毒的杀菌剂,采用生长速率法和孢子萌发法比较了13种杀菌剂对玉米大斑病菌和弯孢霉叶斑病菌的毒力作用。结果表明,不同杀菌剂之间对2种病菌菌丝生长和孢子萌发的抑制活性存在显著差异。其中氟啶胺、苯醚甲环唑、烯唑醇、丙环唑、腈苯唑、咪鲜胺锰盐等对病菌菌丝生长具有较强的抑制效果,其EC50值均低于1μg·mL^-1,而代森锰锌的抑制作用较差,EC50值分别为5.3745和6.4650μg·mL^-1;6种不同作用机理的杀菌剂中,氟啶胺和异菌脲对大斑病菌孢子萌发抑制效果较好,EC50值分别为0.3147和1.5156μg·mL^-1,而丙环唑和吡唑醚菌酯则对弯孢霉叶斑病菌孢子萌发抑制作用较佳,EC50值分别为5.0490和18.8439μg·mL^-1。 In order to select effective fungicides to control maize leaf spot caused by Exserohilum turcicum and Curvularia lunata, the toxicity of 13 fungicides were investigated by mycelium growth rate and spore germination methods. The results showed that 6 fungicides, including fluazinam, difenoconazole, diniconazole, propiconazole, benzene, proehloraz-manganese chloride complex and so on, had higher inhibition on myeelium growth of E. turcicum and C. lunata, the EC50 values were below 1 μg·mL^-1. However the inhibition of mancozeb were not potent, with the EC50 value of 5.3745 and 6.4650 μg·mL^-1 respectively. In 6 fungicides of different mechanisms, fluazinam and iprodione showed better inhibitory effect on E. turcicum, with the EC50 values of 0.3147 and 1.5156μg·mL^-1. But the effect of propieonazole and pyraclostrobin on C. lunata were best, with the EC50 values of 5.0490 and 18.8439 μg·mL^-1.
作者 甘林 代玉立 杨秀娟 杜宜新 阮宏椿 石妞妞 陈福如 GAN Lin1,2, DAI Yu-Li1,2, YANG Xiu-Juan1,2, DU Yi-Xin1,2, RUAN Hong-Chun1,2, SHI Niu-Niu1,2, CHEN Fu-Ru1,2. (1.1nstitute of Plant Protection, Fujian Academy of Agricultural Science, Fuzhou, Fujian 350013, China; 2. Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests, Fuzhou, Fujian 350003, China)
出处 《武夷科学》 2017年第1期88-93,共6页 Wuyi Science Journal
基金 福建省属公益类科研院所专项(2017R1025-3) 福建省农业科学院博士启动基金(2015BS-4) 福建省农业科学院植物保护创新团队项目(STIT2017-1-8).
关键词 玉米 大斑病菌 弯孢霉叶斑病菌 杀菌剂 毒力测定 Maize Exserohilum turcicum Curvularia lunata fungicides toxicity determination
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