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测定了金腰箭等 9种菊科植物提取物对菜粉蝶、小菜蛾和斜纹夜蛾的拒食活性。结果表明 ,这些菊科植物对菜粉蝶幼虫、小菜蛾幼虫和斜纹夜蛾幼虫都有不同程度的拒食作用。其中金腰箭、铺地菊、胜红蓟对菜粉蝶幼虫的拒食效果好 ,1%的提取物拒食率 2 4h(小时 )与 4 8h(小时 )达 80 %以上 ;金腰箭、铺地菊对小菜蛾也有较强的拒食效果 ,1%的提取物拒食率 2 4h(小时 )与 4 8h(小时 )达 6 0 %～ 80 % ;而对斜纹夜蛾的拒食效果均较差 ,2 %的提取物最高的拒食率也仅为 6 0 %左右。
The antifeeding activity of 9 kinds of Compositae extracts such as Jinya arrow on Pieris rapae, Plutella xylostella and Spodoptera litura was determined. The results showed that these Compositae have different levels of antifeeding effect on the larvae of the cabbage butterfly larvae, Plutella xylostella larvae and the Spodoptera litura larvae. Among them, Jinyaojian, Pao Daju and Sheng-Zhi Thistle had good antifeedant effect on the cabbage butterfly larvae, and the antifeedant rate of 1% of extract was 24 h (hour) and 48 h (hour) over 80% Chrysanthemum against Plutella xylostella also had a strong antifeedant effect, 1% of the extract antifeedant rate of 2 4h (hours) and 48h (hours) of 60% to 80%; and Spodoptera litura antifeedant effect are poor, 2 The highest rate of antifeedant extract of only about 60%.