摘要
研究核桃青皮对枸杞蚜虫的触杀和拒食活性,为开发以核桃青皮为原料的植物杀虫剂提供依据。采用点滴法,测定了核桃青皮乙醇提取物和石油醚、氯仿、乙酸乙酯、水4种不同极性萃取物对枸杞蚜虫的触杀活性;用载毒叶片法,测定了石油醚、氯仿、乙酸乙酯、水的4种提取物对枸杞蚜虫的拒食活性。结果表明,核桃青皮提取物对枸杞蚜虫有较高的触杀活性,质量浓度为50.00 g/L时,48 h的校正死亡率达86.6%;4种萃取物对枸杞蚜虫的触杀活性和拒食活性的顺序为水萃取物>氯仿萃取物>乙酸乙酯萃取物>石油醚萃取物,其中水萃取物48 h的校正死亡率为93.0%。由此表明,核桃青皮对枸杞蚜虫具有较强的触杀活性,且杀虫活性和拒食活性较强的物质为一类极性较大的化合物。
The research aimed to study the insecticidal and antifeedant activity of extracts from walnut peel against wolfberry aphids.The insecticidal activities of the ethanol extract and 4 kinds of extracts with petroleum ether,chloroform,ethyl acetate and water from walnut peel against wolfberry aphids were studied.The results showed that 95% ethanol extract displayed high contact insecticidal activity to wolfberry aphids.The corrected mortality after 48 h reached 86.6% under the concentration of 50.00g/L.The insecticidal and anti-feeding activities of 4 extractsagainst wolfberry aphids were in the order of water extract chloroform extract ethyl acetate extract petroleum ether extract.The corrected mortality of water extract after 48h was 93.0%.Walnut peel had very high contact toxicity and anti-feeding activities to wolfberryaphids,and the activity substances were a kind of strong polar compounds.
出处
《河南农业科学》
CSCD
北大核心
2010年第11期70-72,共3页
Journal of Henan Agricultural Sciences
基金
宁夏回族自治区自然科学基金项目资助(NZ09205)
关键词
核桃青皮
提取物
枸杞蚜虫
触杀活性
拒食活性
Walnut peel
Extract
Wolfberry aphids
Insecticidal activity
Anti-feeding activity
