摘要
嘧菌酯为甲氧基丙烯酸酯类杀菌剂,具有杀菌谱广、杀菌活性高等优点,但同时该类药剂也属于高抗性风险药剂。为明确我国黄瓜主产区黄瓜霜霉菌对嘧菌酯的抗药性,采用叶盘漂浮法测定来自黑龙江、吉林、辽宁、北京、山东、江苏、湖北和广东8个省份13个黄瓜主产区36个黄瓜霜霉病菌（Pseudoperonospora cubensis）菌株对嘧菌酯的抗药性。黄瓜霜霉菌对嘧菌酯的EC50值为0.0107-0.2408μg·m L^-1,平均EC50值为0.1004μg·m L^-1。36个菌株中有26个中抗菌株、9个低抗菌株和1个敏感菌株,无高抗菌株。山东省菌株对嘧菌酯的抗性水平最高,其余省份菌株对嘧菌酯抗性水平相对较低。
Azoxystrobin is a strobilurin fungicide, it has a broad antimicrobial spectrum and high activity, but at the same time the agent also runs the risk of becoming a resistance agent. In order to understand the resistance of the cucumber downy mildew＇s （Pseudoperonospora cubensis） sensitivity to azoxystrobin, 36 cucumber downy mildew isolates were tested using the leaf disk floating method. The isolates were collected from 13 production areas over eight provinces：Heilongjiang, Jilin, Liaoning, Beijing, Shandong, Jiangsu, Hubei and Guangdong. EC50 of Pseudoperonospora cubensis to azoxy-strobin was 0.0107-0.2408μg·mL^-1 and the average EC50 was 0.1004μg·mL^-1. Of the 36 strains, 26 had a medium level of resistance, nine had low resistance, one was sensitive and none were highly resistant. The resistance level of Shandong Province strains to azoxystrobin was the highest and the resistance levels of other provinces＇ resistant strains to azoxystrobin were relatively low.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2015年第4期23-28,58,共7页
Journal of Northeast Agricultural University
基金
国家自然科学基金项目(31171792)
关键词
黄瓜霜霉菌
抗药性
嘧菌酯
敏感性
Pseudoperonospora cubensis
fungicide resistance
azoxystrobin
sensitivity
