Plant has formed a variety of inherent defense mechanisms in its long-term adaptation process with the complex habitat. For phytophagous insects, the plants inherent defense system is mainly related to plant morphological characteristics and secondary metabolites, and its mechanisms can be classified into constitutive defense mechanism and induced defense mechanism. The effect of plant characteristics on insects was reviewed in this article, including the plants hair, wax, leaf profile, and leaf color and so on. The effect of volatile or non-volatile secondary metabolites on phytophagous insects was also summarized. Finally, the perspective of practical application of constitutive defense system is proposed as well.%植物在长期适应复杂生境的过程中,形成了多种自身固有的防御机制.对于植食性昆虫而言,植物固有的防御系统主要涉及植物的形态特性和次生代谢产物,其防御机制包括了组成防御机制和诱导防御机制.本文从植物的毛、蜡质、叶型、叶色等几个方面探讨了植物形态特性对昆虫的影响,以及挥发性次生代谢物和非挥发性次生代谢物对植食性昆虫的影响,阐释了植物组成型防御与植食性昆虫的关联性及其机理.最后,对植物组成型防御在生产上的应用前景进行了探讨.
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