摘要
利用芹菜夜蛾核型多角体病毒室内感染２龄小菜蛾、棉铃虫和甜菜夜蛾，测得ＬＣ５０分别为２．４７×１０６、７．９６×１０５和２．２２×１０５ＰＩＢ／ｍｌ。以４．２２×１０７和４．２２×１０６ＰＩＢ／ｍｌ两种浓度感染小菜蛾、棉铃虫和甜菜夜蛾等２龄幼虫，测得ＬＴ５０，小菜蛾分别为６．１５和７．３２天，棉铃虫分别为８．２０和１１．３７天，甜菜夜蛾分别为５．５３和７．２０天。致死时间均随感染浓度增加而减少。
An infectivity test of Syngrapha falcifera multiple nuclear polyhedrosis virus (SfaMNPV) against Plutella xyiostella (Px.), Helilcoverpa armigera (Ha.) and Laphygma exigua (Le.) was carried out in our laboratory. By bioassay on second instar Px., Ha. and Le. larvae, the LC 50 of SfaMNPV was determined as 2.47×10 6, 7.96×10 5 and 2.22×10 5PIB/ml respectively. When they were infected at a concentration of 4.22×10 7PIB/ml and 4.22×10 6PIB/ml, the LT 50 was 6.15d and 7.32d, 8.20d and 11.37d, and 5.53d and 7.20d, respectively.
出处
《中国生物防治》
CSCD
1997年第4期151-153,共3页
Chinese Journal of Biological Control
关键词
芹菜夜蛾
核型多角体病毒
小菜蛾
生物测定
yngrapha falcifera multiple nuclear polyhedrosis virus bioassay LC 50 LT 50
