CAJ | 학술논문

提取、分离了雷公藤（Tripterygium wilfordii Hook）根皮中总生物碱，并对其杀虫活性和作用方式进行了系统的生物测定。结果表明，雷公藤总生物碱对5龄菜青虫有很强的麻醉、拒食和毒杀作用；拒食中浓度AFC50为275.53 mg/L，毒杀中浓度LC50为77.86 mg/L，麻醉中量ND50为2.29 μg/g；雷公藤总生物碱无触杀和熏蒸作用。试虫中毒症状主要为幼虫表皮出现黑斑，形成黑斑部分不能脱去旧表皮，最终死亡。
제취、분리료뢰공등（Tripterygium wilfordii Hook）근피중총생물감，병대기살충활성화작용방식진행료계통적생물측정。결과표명，뢰공등총생물감대5령채청충유흔강적마취、거식화독살작용；거식중농도AFC50위275.53 mg/L，독살중농도LC50위77.86 mg/L，마취중량ND50위2.29 μg/g；뢰공등총생물감무촉살화훈증작용。시충중독증상주요위유충표피출현흑반，형성흑반부분불능탈거구표피，최종사망。
Alkaloids were extracted from the root bark of Tripterygium wilfordii Hook and identified.The results showed that the alkaloids has obviously insecticidal activities to imporbed cabbage worm (Pieris rapae L.).LC5 0 values of poisoning to the 5th instars of Pieris rapae is 77.86 mg/L.The val ues of medium antifeedant concentration (AFC50) of the alkaloiods against 5th larvae of pieris rapae is 275.53 mg/L.Median narcosis dosage (ND50) is 2.29 μg/g.The alkaloids have neither fumigant nor contact poisoning to the ins ect.The main poisoning symptoms are that the activity of the tested insect was d ecreasing and the epiderm of the larvae turns black,the larvae are dead at the l ast.