摘要
室内生测表明不同浓度芫花乙醇粗提物 (YAE)处理叶饲养卫矛尺蠖 2 4 h后 ,导致试虫食量 减少 ,体重下降 ,且浓度与效果呈正相关。如 1 0 %芫花处理组食叶量比 CK减少 53.78% (重量计 ) ,虫重比原来下降 1 4.81 % ,而 CK体重增加 1 9.51 %。β-谷甾醇对试虫食叶量影响虽不明显 ,但1 .0 % ,0 .5% ,0 .1 %处理仍可使试虫体重显著下降。 YAE的拒食中浓度为 2 .76% ,β-谷甾醇为0 .34%。 YAE及β-谷甾醇对
Feeding capacity and growth rate are significantly reduced since the larvae, Abraxas miranda, have taken the leaves treated with Yuan hua( Daphne genkwa )alcohol extract(YAE).The higher the concentration,the better is the effect on the insects.For example,the food capacity of larvae eaten leaves contaminated with 10% YAE was reduced by 53.28% as compared with that of control,body weight lost 14.81% of its origin,while weight increased by 19.51% for the control.The effect of β sitosterol on this insect is much less than that of YAE.The effects of inhibition on feeding and reduction of growth are much less both for YAE and β sitosterol at any concentrations on the larvae of Prodenia litura .The reason for these are discussed briefly.
出处
《中国森林病虫》
北大核心
2001年第2期7-9,共3页
Forest Pest and Disease
基金
国家自然科学基金课题! (39770 16 )"芫花杀虫组分分离及杀虫机理研究"一部分
