【作者】 何成兴； 吴文伟； 林军； 郭志祥； 尹可锁； 罗雁婕； 浦恩堂；

【Author】 HE Cheng-xing~1,WUWen-wei~1,LIN Jun~(2*),GUO Zhi-xiang~1,YIN Ke-suo~1, LUO Yan-jie~1,PU En-tang~1 (1.Institute of Agricultural Environment and Resource,YAAS,Kunming 650205,China.2.Department of Applied Chemistry,Yunnan University,Kunming 650091,China)

【机构】 云南省农业科学院植物保护研究所； 云南大学应用化学系；

【摘要】 通过测定7种几丁质抑制剂对小菜蛾第2龄幼虫的毒杀活性和拒食活性,筛选出化合物D和化合物G2种化合物的毒杀活性最强,两种化合物对小菜蛾第2龄幼虫分别处理24 h、48 h、72h后的死亡率相应为57.5±12.6%、82.5.0±5.0%、85.0±5.8%和55.0±5.8%、72.5±9.6%,80.0±8.2%。拒食率以化合物D最好,其次是化合物C和化合物G,对小菜蛾幼虫的拒食率分别为92.2±1.4%,87.3±3.6%和84.9±1.9%。化合物B、化合物G与化合物D对小菜蛾幼虫处理后24 h的AFC₅₀分别为178.07mg/L、249.28mg/L和326.17mg/L。更多还原

【Abstract】 Insecticidal and antifeeding activities of 7 kinds of chitin synthesis inhibitors were determined. The results show that the Insecticidal and Antifeeding activity of compound D and G against 2nd instars larvae of Plutella xylostella were better than the others,the following of mortality rate were 57.5±12.6%,82.5.0±5.0%,85.0±5.8%and 55.0±5.8%,72.5±9.6%,80.0±8.2%after 24h,48h,72h treatment respectively.The antifeeding rate of compounds D,C and G against 2nd instars larvae of Plutella xylostella were better than the others,the following of antifeeding rate were 92.2±1.4%,87.3±3.6%and 84.9±1.9%after 24h treatment respectively.The AFC₅₀ of compounds B,G and D against 2nd instars larvae of P.xylostella were 178.07mg/L,249.28mg/L and 326.17mg/L after 24 h treatment respectively.更多还原