农药学学报2016，Vol.18Issue(4)：453-458,6.DOI:10.16801/j.issn.1008-7303.2016.0063
番茄早疫病菌对啶菌鰁唑敏感基线建立及药剂作用方式初探
Sensitivity baseline ofAlternaria solani to pyrisoxazole and the mode of action of pyrisoxazole
摘要
Abstract
To study the sensitivity ofAlternaria solani to pyrisoxazole, 166 single-spore isolates were collected from tomato fruits or leaves infected byA. solani without exposure to pyrisoxazole in open field or greenhouse in Shanxi province, Inner Mongolia Autonomous Region, Shandong province, Hainan province, Jiangsu province, Fujian province and Shaanxi province. The sensitivity of each isolate to pyrisoxazole was determined by mycelial growth inhibition rate. The range of EC50 values were from 0.11 mg/L to 2.29 mg/L, and the sensitivity frequency was normally distributed. Thus, the sensitivity baseline was established with the mean EC50 value (0.56 ± 0.39) mg/L of pyrisoxazole. There were significant differences in the mean EC50 value of each collected district. The isolates from Fujian province were the most sensitive, while the isolates from Shanxi province (Datong, Jinzhong and Changzhi) were the least sensitive to pyrisoxazole. Pyrisoxazole provided excellent protective and curative activity onA. solani when applied at 200 mg/L, and it showed the best control efficacy before the artificial inoculation in 4 days and after inoculation in 2 days. Consequently, there is a good application prospect to pyrisoxazole for controlling tomato early blight.关键词
番茄早疫病菌/啶菌齕唑/敏感基线/作用方式/保护作用/治疗作用Key words
Alternaria solani/pyrisoxazole/sensitivity baseline/mode of action/protective effect/curative effect分类
农业科技引用本文复制引用
史晓晶,周恩超,任璐,韩巨才,梁彬,刘慧平..番茄早疫病菌对啶菌鰁唑敏感基线建立及药剂作用方式初探[J].农药学学报,2016,18(4):453-458,6.基金项目
山西省科技基础条件平台建设项目(2014091003-0102)；山西省农业技术推广示范行动项目(SNJTGSFXD201402)；忻州师范学院2013年院级青年基金项目(QN201320) （2014091003-0102）
