苦皮藤麻醉成分对昆虫的选择毒性及其机制的初步研究  

PRELIMINARY STUDIES ON THE SELECTIVE TOXICITY AND SELECTIVE MECHANISM OF NARCOTIC ACTIVE INGREDIENT OF CELASTRUS ANGULATUS AGAINST THE INSECT PESTS

作　　者：刘惠霞[1] 王启坤[2] 吴文君[1] 钱洪[1] 张翌楠[1] 王伟[1] 

机构地区：[1]西北农业大学植物保护系,陕西杨陵712100 [2]陕西省农业科学院

出　　处：《西北农业学报》1993年第2期31-36,共6页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家自然科学基金

摘　　要：对8种重要农林害虫的生测结果说明,苦皮藤麻醉有效成分对昆虫具有选择麻醉作用。槐尺蠖(Cemiothisa cinerearia)、粘虫(Mythimna separata)和菜青虫(Pieris rapae)5龄幼虫分别摄食97.4、122.6和142.1μg(药剂)/g(体重)的剂量,即有50%的试虫被麻醉;而甘蓝夜蛾(Barathra brassicae)、小地老虎(Agrotis ypsilon)、八字地老虎(Agrotis c-nigrum)、银纹夜蛾(Plusia agnata)和黄地老虎(Agrotissegetum)5龄幼虫分别摄食2620.5、1406.5、1980.3、2407.7和1925.0μg(药剂)/g(体重)的剂量亦无一供试个体被麻醉或中毒。生化分析结果进一步指出,昆虫中肠羧酸酯酶的活性及酯酶同功酶的差异是这种选择麻醉作用的重要机制。The bioassay results of the narcotic ingredients of Celastrus angulatus against 8 species of insect pests showed that the ingredients had selective narcotic action., the 5th—instar larvae of Cemiothisa cinerearia, Mythimna separata, Pieris rapae could be narcotized, ND_(50) (the dose required to narcotize 50% of the population) was 97.4, 122. 6, 142. 1 μg/g; no individual of the 5th—instar larvae of Barathra brassicae, Agrotis ypsilon, Agrotis c-nigrum, Plusia agnata, Agrotis segetum would be narcotized or poisoned even though the dose was 2620. 5, 1406.5, 1980.3, 2407.7, 1925.0 μg/g respectively. The results of biochemical analysis indicated that the difference of the activity of carboxylesterase and esterase isozymes in the larval midguts were the main mechanism of this selective toxicity.

关 键 词：苦皮藤 毒性 昆虫 

分 类 号：S482.39[农业科学—农药学]