南方农业学报Issue(3)：401-405,5.DOI:10.3969/j.issn.2095-1191.2014.3.401
广西瓜类白粉病菌对醚菌酯的抗药性及其对3种药剂的敏感性检测
Resistance of melon powdery mildew isolates to kresoxim-methyl in Guangxi and determination of its sensitivity to three fungicides
摘要
Abstract
[Objective]The resistance level, distribution and development of melon powdery mildew isolates to kresoxim-methyl in Guangxi were identified and effective alternative fungicides were screened to provide references for prevention and controlling of melon powdery mildew. [Method]From 2007 to 2012, bitter gourd, wax gourd, muskmelon, cucumber and bottle gourd disease samples were collected from Nanning, Guiping, and Beihai, etc. Their isolates’ resistance to kresoxim-methyl were detected by leaf disk tests. Sensitivity of high-resistant isolates to carbendazim, trifloxystrobin and propineb were also analyzed. [Result]The results showed that 83 melon powdery mildew population produced resistance to kresoxim-methyl in varying degrees. Resistant isolates were mainly distributed in bitter gourd powdery mildew and their resistant fre-quency was the highest (63.89%), while bottle gourd isolates had the lowest resistant frequency (6.67%). The resistant level of bitter gourd powdery mildew against to kresoxim-methyl increased gradually from 2007 to 2012 in Nanning City, resulting in development of high-resistance population. Fungicide screening assay results indicated that powdery mildew isolates with highly resistant to kresoxim-methyl, were highly drug-fast to carbendazim and cross-resistant to trifloxystrobin, but was sensi-tive to propineb. [Conclusion]In Guangxi, melon powdery mildew isolates were highly resistant to kresoxim-methyl and al-ternate use of propineb in the production process could be recommended.关键词
瓜类/白粉病菌/醚菌酯/抗药性/敏感性/广西Key words
melon/powdery mildew/kresoxim-methyl/resistance to fungicide/sensitivity/Guangxi分类
农业科技引用本文复制引用
林珊宇,朱桂宁,颜梅新,贤小勇..广西瓜类白粉病菌对醚菌酯的抗药性及其对3种药剂的敏感性检测[J].南方农业学报,2014,(3):401-405,5.基金项目
现代农业产业技术体系建设专项项目（CARS-25）；广西农业科学院科技发展基金项目 （）
