期刊论文

中文

中国生物防治学报

2095-039X

2008

24

1

16-21

10.16409/j.cnki.2095-039x.2008.01.005

中央科研院所社会公益研究专项（2004DIB4J156）

本校为第一机构

在室内条件下,以2个亚致死浓度（0.15和0.30mg/L）喷雾处理烟粉虱1、5日龄卵,明确了印楝素亚致死浓度对烟粉虱实验种群发育、存活、繁殖均具有显著的抑制作用。其中,印楝素处理1日和5日龄卵分别使幼期（卵至成虫羽化）发育历期延长0.92至2.84d,幼期存活率降低了56.3%至89.6%,若虫虫体长宽减小,雌成虫寿命降低29.8%至48.6%,平均单雌产卵量降低49.8%至72.5%。清水对照、0.15mg/L和0.30mg/L印楝素溶液处理1日龄卵,烟粉虱实验种群的内禀增长率分别为0.227、0.0742和0.060,净增殖率依次为36.40、7.29和5.33;处理5日龄卵时两者分别为0.126、0.114和0.059与39.192、3.59和4.93。

The bioactivities of azadirachtin （AZ） at sublethal dosages on Bemisia tabaci was studied in laboratory by foliar spraying AZ concentrations of 0.15 mg/L and 0.30 mg/L to 1 d and 5 d old eggs. Results showed that the sublethal AZ as a foliar application significantly delayed immature （from egg to adult emergence） development by 0.92 d to 2.84 d, reduced immature survival rate by 56.3% to 89.6 %, retarded nymph size increase, decreased longevity of adult females by 29.8 % to 48.6 %, and lowered fecundity by 49.8% to 72.5%. With CK （tap wate...