【摘要】 利用叶碟法(选择性和非选择性)和取食称重法,测定并肯定了丁布对亚洲玉米螟的拒食作用。在叶碟法中,非选择性拒食率低于选择性拒食率;本实验结果表明,丁布对亚洲玉米螟的胚胎发育可能有一定影响,对幼虫的生长发育有深刻影响,幼虫体重降低,发育迟缓,蛹重降低,并出现畸形蛹。亚洲玉米螟的蛀孔绝大部分在植株节间的下部,而该部位的丁布含量最高。这种现象值得进一步分析研究。更多还原

【Abstract】 The extracted DIMBOA was used to determine its biological activities onthe Asian corn borer (ACB),Ostrinia furnscalis (Guenee).The antifeedant prop-erty of DIMBOA on ACB was confirmed by the methods of leaf-disc (selected andunselected) and feeding-weighing.Antifeeding ratio in unselected experiment waslower than that in selected one.Our results showed that DIMBOA had some effecton embryonic development of ACB and significantly affected the growth and devel-opment of ACB’s larvae.The larvae’s growth and development were delayed,mor-tality increased,weight of both the larvae and the pupae decreased,sex ratio (f/m)decreased,and deformed pupae appeared after the treatment with DIMBOA.MostACB holes in plants are at the lower parts of internodes,where DIMBOA concen-trations are higher.Further researches on this phenomenum are needed.更多还原