摘要
利用均匀设计法研究了北马兜铃根、茎和叶乙醇浸提液对玉米蚜的生物活性。结果表明:北马兜铃根的乙醇浸提液对玉米蚜具有明显的触杀作用,24 h和48 h的致死中浓度(LC50)分别为18.06、16.67 mg/L,48 h的致死率达98.3%。叶的乙醇浸提液对玉米蚜具有明显的拒食作用,24 h和48 h的拒食中浓度(AFC50)分别为18.62、18.22 mg/L,48 h的拒食率达98.2%。茎的乙醇浸提液触杀和拒食作用均不明显。
Studied bioactivity of ethanolic extracts fi＇om the roots, stems and leaves of A ristolochia contorta Bunge against Rhopalosiphum maidis by uniform design. The results showed that ethanolic extracts from the roots of Aristolochia contorta Bunge. had obvious contact toxicity. Activity with 24 h and 48 h LC50 value of 18.06 mg/L and 16.67mg/L, the 48 h rate of death was 98.3%.The ethanolic extracts of leaves had obvious antifeeding activity with 24 h and 48 b AFC50 value of 18.62 mg/L and 18.22 mg/L, the 48 h rate of antifeeding was 98.2%. The ethanolic extracts of the stems had no obvious effect of contact toxicity and antifeeding activity.
出处
《广东农业科学》
CAS
CSCD
北大核心
2011年第7期100-102,共3页
Guangdong Agricultural Sciences
基金
吉林省教育厅自然科学基金([2003]-65)
关键词
北马兜铃
玉米蚜
均匀设计
生物活性
A ristolochia contorta Bunge
Rhopalosiphum maidis
uniform design
bioactivity
