紫穗槐协同杀虫成分分离及其毒力研究  

Studies on Separation of Compounds and Toxicity of the Insecticide in Amorpha fruticosa

作　　者：高桂枝[1] 苑姗姗[1] 虞梅[1] 

机构地区：[1]南京信息工程大学环境科学与工程学院,南京210044

出　　处：《现代农药》2008年第5期43-45,54,共4页MODERN AGROCHEMICALS

基　　金：江苏省高校高新技术产业发展基金(JH03-036);南京信息工程大学基金(Y616)资助

摘　　要：通过对紫穗槐叶和茎成分分离,得到6a,12a-脱氢-α-灰叶酚、6a,12a-脱氢鱼藤素、(±)灰叶素、(-)6-羟基-6a,12a-脱氢灰叶酚4个化合物。对大皱腮金龟甲毒力试验表明,这4个化合物单独给药杀虫活性较弱,按1:2.54:4.18:2.54天然比例混配,表现出明显的协同增效作用,LC5013.4898mg.L-1,共毒系数2318。给药方式和溶剂类型对杀虫活性有显著影响,室外叶面喷雾法明显优于室内浸蘸法,吐温水乳剂效果优于氯仿溶液。Toxicity of four compounds identified as 6a,12a-dehydro-α-toxicarol, 6a,12a-dehydro-deguelin, （±）-tephrosin and （-）-6-hydroxy-6a, 12a-dehydro-toxicarol obtained from the leaves and stem of Amorpha Fruticosa （L） and their mixture in a natural ratio 1 ： 2.54 ： 4.18 ： 2.54 were tested against Trematodes grandis. The results showed that the four compounds had week insecticidal activity. But their mixture with a proportion 1 ： 2.54 ： 4.18 ： 2.54, similar to the natural ratio in Amorphafruticosa, showed excellent insecticidal activity, with a LCso 13.489 8 mg·L^-1 and CTC 2318. Meanwhile, the tox-presenting method and solvent had important effect on the toxicity of the mixture. Leaf spray outside was better than leaf dip-soak in lab; tween was better than chloroform.

关 键 词：紫穗槐 大皱腮金龟甲 杀虫成分 毒力 

分 类 号：S482.39[农业科学—农药学]