4种化合物对荔枝蒂蛀虫的调控作用

在室内进行芳樟醇、薄荷酮、丁香酚和印楝素对荔枝蒂蛀虫成虫产卵驱避试验，同时研究化合物对荔枝蒂蛀虫卵的孵化和蛹的羽化过程的影响。在同一浓度下，对荔枝蒂蛀虫成虫产卵的驱避效果依次是丁香酚>芳樟醇>薄荷酮>印楝素。对荔枝蒂蛀虫卵的调控试验表明：0.3%印楝素对荔枝蒂蛀虫卵不具有熏杀作用，而其触杀作用最好；其他化合物对荔枝蒂蛀虫卵均具一定的熏杀和毒杀作用；随着化合物浓度的增加，熏杀和毒杀作用增强。对荔枝蒂蛀虫蛹的毒杀作用试验表明：用纯化合物处理蛹时，蛹茧立刻胀起，边缘皱缩，2天后观察，蛹体发黑，干缩死亡；稀释后的化合物处理蛹，蛹死亡率较低，仅为20.00%~26.70%。结果表明，芳樟醇、薄荷酮、丁香酚和印楝素对荔枝蒂蛀虫的不同虫态的发生均具有一定的抑制作用。

Toxicity and Behavioral Effect of the Main Components of the Plant Volatile Oil on Conopomorpha sinensis

Linalool,menthone,eugenol and azadirachtin were tested on the oviposition repellency effect on Conopomorpha sinensis indoor.The effect of the chemicals on the borer adult,egg hatching and pupa emergence were also studied.In the same concentration,the repellency effect sequence (from high to low) was eugenol>linalool>mint>azadirachtin.Experiments on the impact of the chemical on C.sinensis eggs showed that 0.3% azadirachtin did not have suffocating effect on litchi fruit borer eggs,but had best contact toxic...