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绝多大数维管植物对其环境中的大多数病原体的侵入具有一种能够避免或抵抗病菌侵染的能力.一般说来,这种能力可分为两类,一类是本身固有的,另一类是由侵染所诱导的.前者包括形态学和组织学上的结构,这些结构在值物体中原本有其他功用,它的存在与病原体无关.这种抗性的实质常同非专化小种抗性有关.诱发或主动抗病性是寄主植物体中对于病原侵染或试图侵染的反应而激活的一种抵抗机制,它包括生理或化学屏障的形成以及阻碍病菌生长的抗菌化合物的合成与积累.主动抗性常包含在基因专化性抗性中,也可包括在非专化性或非寄主的抗性中.植物育种者广泛应用主动抗性培育免病品种.
The vast majority of vascular plants have the ability to infect or invade most of the pathogenic organisms in their environment, which can avoid or resist infection by germs. In general, this ability can be divided into two categories, one inherent in itself and the other One is induced by infection, the former including morphological and histological structures, which have other functions in value objects and whose existence has nothing to do with pathogens. The nature of this resistance is often the same as non-specific Induced or active resistance is a resistance mechanism activated in the host plant in response to pathogen infection or attempted infection and includes the formation of physiological or chemical barriers as well as antibacterial compounds that hinder the growth of germs Active resistance is often included in genetically specific resistance, but also in non-specific or non-host resistance, and plant breeders use active resistance to develop disease-free varieties.