印楝素、闹羊花素－Ⅲ对斜纹夜蛾的生物活性及作用机理的研究  

STUDIES ON THE EFFECTS AND MECHANISMS OF AZADIRACHTIN AND RHODOJAPONIN-ⅢON Spodoptera litura (F.)

作　　者：李晓东[1] 陈文奎[1] 胡美英[1] 

机构地区：[1]华南农业大学昆虫毒理室

出　　处：《华南农业大学学报》1995年第2期80-85,共6页Journal of South China Agricultural University

基　　金：国家自然科学基金

摘　　要：本试验通过室内生物测定证实印楝素、闹羊花素－Ⅲ对斜纹夜蛾幼虫具毒杀、拒食、抑制生长发育的活性。放射免疫测定表明印楝素对试虫的蜕皮甾类滴度，促前胸腺激素活性有抑制作用，导致生长发育受阻。本文还对印楝素作用于斜纹夜蛾的机理做了初步探讨。The effects of azadirachtin and rhodojaponin-Ⅲ on the larvae of Spodoptera litura(F.)were tested by bioassays,The results indicated that both phytochemicals had the proper-ties of contact poison,antifeedant and growth inhibition on the experimental insects. Radioimmune assay test showed that azadirachtin inhibited the titres of endocrinic hormones,inducing the growth-inhibition on the treated insects.The mechanism of action of azadirachtinwas also preliminarily discussed in this paper.

关 键 词：印楝素 闹羊花素-Ⅲ 斜纹夜蛾 蜕皮甾类 激素 

分 类 号：S482.39[农业科学—农药学]