摘要
测定了土荆芥(Chenopodium ambrosioidesL.)4种溶剂(100%乙醇、丙酮、乙酸乙酯和石油醚)提取物对玉米象Sitophilusz eamais Motschulsky的触杀和,蒸活性。4种溶剂提取物在6.494mg/cm2浓度下对玉米象的触杀效果:48h后100%乙醇提取物和石油醚提取物的校正死亡率均达100%;丙酮提取物次之,为92.31%;乙酸乙酯提取物最低,为64.10%,但72h后达94.17%。4种溶剂提取物对玉米象的,蒸活性:72h后0.50mg/mL浓度处理下校正死亡率为98.73%～100%。
Four different solvent（100% ethanol,acetone,ethyl acetate and petroleum ether） extracts from Chenopodium ambrosioides L.were tested for their contact and fumigant toxicities against Sitopholus zeamais Motschulsky.When treated with 6.494 mg/cm2 for 48 h,the 100% ethanol extract and the petroleum ether extract had the most effective contact toxicity against S.zeamais,the corrected mortality rates of both extracts reaching 100%.Acetone extract had the better contact toxicity with a corrected mortality rate of 92.31%.Ethyl acetate extract had the lowest contact toxicity;its corrected mortality rate was 64.10%,but reached 94.17% 72 h after application.All four extracts had good fumigant toxicity against S.zeamais with corrected mortality rates reaching 98.73%-100% for doses of 0.50 mg/mL after 72 h.
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2011年第6期1775-1778,共4页
Chinese Journal of Applied Entomology
基金
湖北省教育厅中青年项目(Q200727002)
黄冈师范学院博士科研基金项目(06cd178)
黄冈师范学院大学生科研基金项目(09CS57)
关键词
土荆芥
玉米象
触杀活性
熏蒸活性
Chenopoidium ambrosioides
Sitophiles zeamais
contact toxicity
fumigant toxicity
