在抑制昆虫选择寄主活动的植物成分中,一般有引诱忌避物质、刺激取食物质、阻碍取食物质等。其中对昆虫选择寄主有阻害作用的植物成分和取食阻碍物质的化学结构的研究几乎还是空白。因此,笔者在这个未开拓的领域中开始了一些研究。首先,我们查找了一些不受各种昆虫食害的植物,并从这些植物中抽提分离到其所含有的阻碍取食的物质。同时还进行 In the inhibition of insect selection host plant components, there are generally induced to avoid substances to stimulate the feeding of substances, obstructing the feeding of substances. The study on the chemical constituents of plant components and the chemical substances that impede the selection of insect hosts is still almost empty. Therefore, I started some research in this unexplored area. First, we looked for plants that were not harmed by various insects and extracted from them the substances that hinder their feeding. Also at the same time