3种植物对二点叶螨的生物活性  

Impact of 3 plant extracts on the bioactivity of Tetranychus urticae

作　　者：郭东艳[1] 杨顺义[2] 沈慧敏[2] 张新虎[2] 

机构地区：[1]甘肃农业大学研究测试中心,甘肃兰州730070 [2]甘肃农业大学草业学院,甘肃兰州730070

出　　处：《草原与草坪》2006年第6期35-37,42,共4页Grassland and Turf

基　　金：甘肃农业大学科技创新基金"沙漠化与沙漠逆转过程中昆虫群落多样研究"(GAV-CX0507);甘肃省教育厅基金项目(032-06);甘肃省农业生物技术研究与应用开发项目(GNSW-2004-08)

摘　　要：采用玻片浸渍法,对狼毒,苦参和百部根丙酮提取物对二点叶螨的生物活性进行了测定。3种植物提取物对二点叶螨都有较高的生物活性,狼毒,苦参和百部根提取物48 h的LC50分别为8.47mg/mL,0.62 mg/mL和1.51 mg/mL,对于二点叶螨,苦参提取物的活性最强,百部提取物的次之,狼毒提取物的最弱。By means of the slide-dip method reeommended by FAO, the bioaetivities of extraetions from roots of Stellera chamaejasme ,Sophpra flavescensait and Stemana japonica with acetone to Tetranychus urticaewere tested. The results indicated that 3 plant extracts showed higher, bioaetivities to Tetranychus urticae. The LC50 of extractions of Stellera chamaejasme, Sophpra flavescensait and Stemana japonica were 8. 47 mg/mL,0. 62 mg/mL and 1.51 mg/mL respectively. The extraction of Sophpra flavescensait possessed the strongest bioaetivities to Tetranychus urticae ,and followed by that of Stemana japonica and Sophpra flavescensa it.

关 键 词：狼毒 苦参 百部 二点叶螨 生物活性 

分 类 号：S433[农业科学—农业昆虫与害虫防治]