摘要
用不同菜苗饲养的小菜蛾发育历期基本相同（世代历期为２２～２３ｄ），但以芥蓝菜和甘蓝型油菜饲养的发育状况较好，其平均蛹重均在４．５ｍｇ以上，蛹羽化率为９７．８％～９８．７％，每雌产卵量在２００粒以上．在低温（５～６℃）条件下，卵冷藏１０ｄ孵化率为９０％左右，蛹冷藏２０ｄ羽化率为８０％～９０％．
The development periods of Plutella xylostella were almost consistent (generation duration 22￣23 d) reared with different vegetable seedlings. However both the cabbage and Brassica napus were most suitable for the insect′s development: mean pupa weight was over 4.5 mg; pupa emergence percentage was 97.8%￣ 98.7 % ; the quantity of oviposition was more than 200 grains. The vitality of its eggs and pupae was measured by different time lengths of low temperature keeping. The egg hatch percentage was about 90% kept for 10 d, pupa emergence percentage 80%￣90% for 20 d, at low temperature of 5￣6 ℃.
出处
《福建农业大学学报》
CSCD
1997年第2期187-190,共4页
Journal of Fujian Agricultural University
基金
国家科委"九五"攻关项目
福建省教委立项资助
关键词
小菜蛾
人工饲养
冷藏
生物测定
虫种
Plutella xylostella
artificial rearing
low temperature keeping
bioassay
