摘要
采用浸渍法测定了博落回提取物(MCE)对不同龄期麦长管蚜、禾谷缢管蚜、麦二叉蚜的生物活性。结果显示,博落回提取物对不同龄期3种麦蚜均有一定杀虫活性,对麦长管蚜、禾谷缢管蚜、麦二叉蚜4龄有翅若蚜48h致死中浓度LC50分别为8.185 1、5.313 5、2.682 4g/L,有翅成蚜48hLC50分别为8.575 0、6.614 7、0.590 4g/L,毒力大小均为:麦二叉蚜>禾谷缢管蚜>麦长管蚜,麦二叉蚜对博落回提取物最敏感。研究结果为进一步开展博落回对麦蚜活性组分的分离纯化奠定了基础。
Bioactivity of Macleaya cordata extract （MCE） against Sitobion miscanthi,Schizaphis graminum,and Rhopalosiphum padi was tested by dipping method.The results showed that M.cordata extract was toxic to the three species of wheat aphids,especially on Sc.graminum.After treated for 48 h,the toxic median concentrations （LC50） of MCE against 4th instar alate nymphs of the three species were 8.185 1,5.313 5 and 2.682 4 g/L,respectively,while those of the alate adults were 8.575 0,6.614 7 and 0.590 4 g/L,respectively.Toxicity of MCE could be ranked as follows：Sc.graminum〉R.padi〉Si.miscanthi.The results have laid foundation for further isolation and purification of the bioactive components of MCE.
出处
《植物保护》
CAS
CSCD
北大核心
2014年第3期187-190,共4页
Plant Protection
基金
中比国际合作项目(2010DFA32810)
关键词
博落回提取物
麦长管蚜
禾谷缢管蚜
麦二叉蚜
毒力
Macleaya cordata extract
Sitobion miscanthi
Schizaphis graminum
Rhopalosiphum padi
toxicity
