Tripathi A K, Prajapati V, Aggarwal K K, Khanuja S P, Kumar S
Central Institute of Medicinal and Aromatic Plants, P.O. CIMAP, Lucknow 226015, India.
J Econ Entomol. 2000 Feb;93(1):43-7. doi: 10.1603/0022-0493-93.1.43.
The essential oil of Artemisia annua L. was tested for its toxic repellent and development inhibitory activities against 2 economically important stored product insects: Tribolium castaneum (Herbst) and Callosobruchus maculatus (L.). Adult beetles of T. castaneum were repelled significantly by oil of A. annua at 1% concentration (vol:vol) and above in filter paper arena test. Dose-response relationship of A. annua oil revealed a significant negative correlation between larval survival; pupal survival and adult emergence of T. castaneum (i.e., increase in dose caused decrease in survival and adult emergence). Effective concentration (EC50) to reduce F1 progeny by 50% was calculated to be 2.6 and 4.1 microl/ml solvent against both the insect species, C. maculatus and T. castaneum, respectively. The relationship between bioactivity of oil from A. annua and responses of T. castaneum and C. maculatus is discussed. We found that oil from A. annua was largely responsible for both repellent (behavioral) and toxic (physiological) actions on 2 species of insect tested.
对黄花蒿精油进行了测试,以考察其对两种具有经济重要性的仓储害虫的驱避毒性和生长抑制活性,这两种害虫分别是赤拟谷盗(赫布斯特)和绿豆象(林奈)。在滤纸试验场中,1%浓度(体积比)及以上的黄花蒿精油对赤拟谷盗成虫具有显著的驱避作用。黄花蒿精油的剂量反应关系显示,赤拟谷盗的幼虫存活率、蛹存活率和成虫羽化率之间存在显著的负相关(即剂量增加导致存活率和成虫羽化率降低)。对于绿豆象和赤拟谷盗这两种昆虫,将F1代后代数量减少50%的有效浓度(EC50)分别计算为2.6和4.1微升/毫升溶剂。讨论了黄花蒿精油的生物活性与赤拟谷盗和绿豆象反应之间的关系。我们发现,黄花蒿精油对所测试的两种昆虫的驱避(行为)和毒性(生理)作用起主要作用。