中国烟草学报2018，Vol.24Issue(3)：88-94,7.DOI:10.16472/j.chinatobacco.2017.337
烟草赤星病菌对嘧菌酯及其添加水杨肟酸后的敏感性检测
Determination of susceptibility of Alternaria alternata to azoxystrobin and to azoxystrobin added with salicylhydroxamic acid
摘要
Abstract
In order to investigate the sensitivity level of A.alternata to azoxystrobin,EC50values of 33 isolates of A.alternata,collected from Shandong province and Hubei province,to azoxystrobin were determined using mycelium growth rate method.The sensitivity of 33 isolates to azoxystrobin with added salicylhydroxamic acid(SHAM)was also analyzed.Results showed that the EC50values of 33 isolates to azoxystrobin varied from 60.5230 to 111.7918 mg·L-1,with an average of 83.9068±2.4339 mg·L-1.The mean EC50value was 82.7986±2.5515 mg·L-1for A.alternata collected from Shandong and 88.0230±6.6785 mg·L-1for A.alternate collected from Hubei,respectively.However,the EC50values of 33 isolates to azoxystrobin with added SHAM varied from 19.9090 to 35.6684 mg·L-1,with an average of 29.2007±0.7801mg·L-1.The toxicities under SHAM were enhanced by 0.70-2.98 times(with an average of 1.87 times)compared to that under azoxystrobin alone.The mean EC50value of A.alternata to azoxystrobin with added SHAM was 28.5494±0.8914 mg·L-1for Shandong and 31.6197±1.3290 mg·L-1for Hubei,respectively.The toxicities were increased 1.90 and 1.78 times,respectively.Results also showed that azoxystrobin could inhibit mycelial growth of A.alternate.The toxicity of azoxystrobin to A.alternata could be significantly enchenced by adding SHAM,while the increase level of toxicity varied depending on different bacterial strains.关键词
关键字:烟草赤星病菌/嘧菌酯/水杨肟酸/敏感性Key words
Alternaria alternate/azoxystrobin/salicylhydroxamic acid/sensitivity引用本文复制引用
张彬彬,赵晓雨,张凯伦,徐后娟,夏晓明..烟草赤星病菌对嘧菌酯及其添加水杨肟酸后的敏感性检测[J].中国烟草学报,2018,24(3):88-94,7.基金项目
农作物病虫害绿色防控项目(SYL2017XTTD11) （SYL2017XTTD11）
