摘要
通过室内试验,比较了小菜蛾Plutella xylostellaL.对沙生十字花科蔬菜沙芥叶(PugioniumcornutumL.)、小白菜、油菜和甘蓝叶的产卵选择性。结果表明,产卵选择性顺序为沙芥≥小白菜>油菜>甘蓝,在沙芥叶上的产卵率是甘蓝叶上的9倍多;补充营养使小菜蛾成虫的产卵量平均提高2.5倍,产卵次数增加2倍,在有沙芥叶条件下,当日羽化的小菜蛾便可交尾产卵;在无沙芥叶条件下,小菜蛾成虫的产卵前期平均延迟1d左右。
Oviposition choice of the Plutella xylostella L. among Pugionium cornutum L., Brassica campestris,Brassica napus and Brassica oleraceaas were investigated. The result showed that the preference order was P.cornutttm ≥ B. campestris 〉 B. napus 〉 B. oleracea. The rate of the egg-laid P. cornutunt was 9 times more than that of egg-laid B. oleracea. Nutrition could improve the number of eggs produced per female by 2.5 times and the frequency of lay eggs increasd 2 times. Newly emerged P. xylostella adults could mate and lay eggs immediately if P. cornutum existed, Without P. cornutum, the oviposition of P. xylostella would be delayed about one day.
出处
《昆虫知识》
CAS
CSCD
北大核心
2006年第2期184-186,共3页
Entomological Knowledge
基金
宁夏自治区自然科学基金项目资助(A1009)。
关键词
小菜蛾
沙芥
补充营养
产卵选择
繁殖力
Plutella xylostella L., Pugionium cornutum L., replenishing nutrition, oviposition preference,reproduction capacity
