【摘要】 采用饲喂、口腔灌注、腹足注射和喷雾等方法,比较了海芋凝集素粗品对3种鳞翅目昆虫菜粉蝶、亚洲玉米螟和斜纹夜蛾幼虫的毒杀活性。结果表明:海芋凝集素粗品对受试昆虫有一定的胃毒和触杀活性,其中海芋块茎凝集素粗品口腔灌注菜粉蝶幼虫的胃毒活性最高,5%海芋块茎凝集素粗品处理后5、6 d,菜粉蝶幼虫的死亡率分别为62.5%和75.0%,表明海芋凝集素对昆虫的胃毒是其主要作用方式。更多还原

【Abstract】 Toxic effects ofcrude Alocasia macrorrhiza lectin(AML)on larvae ofcabbage butterfly(Pieris rapae L.),asiatic corn borer(Ostrinia furnacalis Guenea) and tobacco cutworm(Spodoptera litura Fab.) were studied by feeding,mouthparts infusion,pleopoda injection and potter spraying methods,respectively.The results showed that AML had certain stomach toxic,contact toxic to the above tested lepidopteran insects.The stomach toxic effect of AML on the larvae of cabbage butterfly was the strongest,of which the corrected mortality was 62.5% and 75% after infusingbyAML5d and 6d later,respectively.The results showed that the stomach toxic was the main toxic mode ofAMLtolepidopteran pests.更多还原