摘要
室内条件下测定了核桃青皮乙醇提取物对斜纹夜蛾3龄幼虫的生物活性。结果表明,核桃青皮乙醇提取物对斜纹夜蛾3龄幼虫具有较强的毒杀作用,第3天和第7天的LC50值分别为8.35和3.96 g·L-1;在供试浓度为0.5~2.5 g·L-1时,对斜纹夜蛾3龄幼虫具有明显的抑制生长发育作用,主要表现为处理组幼虫体质量增长缓慢,幼虫期和蛹期延长,蛹质量和化蛹率显著低于对照。
The bio-activity of walnut green husk extracts against the 3rd instar larvae of Spodoptera litura was tested by immersion method in the laboratory. The results indicated that the ethanol extract of walnut green husk had a strong toxic effect on the 3rd instar larvae with the LC50 values of the larvae at day 3 and day 7 being 8. 35g·L- 1 and 3. 96 g·L- 1,respectively. The growth of the 3rd instar larvae of S. litura was also inhibited by the extract at the test concentration of 0. 5- 2. 5 g·L- 1. The weight of the treated larvae increased slowly,the larval development and pupal stage were obviously prolonged,and the pupal weight and pupation rate were significantly lower than those of the control.
出处
《热带生物学报》
2015年第3期293-297,共5页
Journal of Tropical Biology
基金
海南省重大专项(ZDZX2013008-4)
国家科技支撑计划课题(2013BAI11B04)
中医药行业科研专项(201207002)
中央级公益性科研院所基本科研业务费专项资金(1630052012014)
三亚市院地科技合作项目(2013YD81)
关键词
核桃青皮
斜纹夜蛾
生物活性
walnut green husk
Spodoptera litura
bio-activity
