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首次系统报道了苦槛蓝对菜青虫的拒食、毒杀作用和影响生长发育的作用。试验表明,1％苦槛蓝氯仿萃取物对菜粉蝶4龄、5龄幼虫的非选择性拒食率均在94％以上,对4龄幼虫的AFC_(50)、AFC_(95)分别为0.12％和0.78％;处理后72h,4龄试虫的校正死亡率为80.8％;处理后4d,试虫的平均体重仅为对照的36.74％;经1％氯仿萃取物处理,4龄试虫羽化率仅为3.33％,发育抑制率达88.89％。生理效应初步研究表明,苦槛蓝氯仿萃取物能显著降低菜青虫的血淋巴蛋白质和中肠酯酶蛋白质含量,对中肠酯酶和乙酰胆碱酯酶的活性有明显影响。田间小区试验表明,苦槛蓝对菜青虫具有较好的防治效果。
For the first time, it reported the antifeedant, poisonous killing effect and the effect of growth and development on the parasitoid parasitoid larvae. The results showed that the non-selective antifeedant rate of 4% and 5 th instar larvae of 1% Cambrian blueberry extract was over 94%, and the AFC 50 and AFC 95 of 4th instar larvae were 0.12% And 0.78%, respectively. After 72 h of treatment, the corrected mortality of the 4th instar larvae was 80.8%. After 4 days of treatment, the average body weight of the insects was only 36.74% of that of the control. After 1% chloroform extract treatment, Only 3.33%, developmental inhibition rate of 88.89%. Physiological effects Preliminary studies have shown that the threshold blue chloroform extract can significantly reduce the Pieris rapae hemolymph protein and midgut esterase protein content, midgut esterase and acetylcholinesterase activity significantly affected. Field plot test showed that the threshold blue cabbage had better control effect.