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在自然界中,由于病原微生物(主要是真菌、细菌和病毒)的分布极为广泛,传播渠道很多,因而农作物不可避免地会受到病原菌的侵染,导致病害的发生;轻者作物生长发育受阻,严重者植株死亡。然而,不同的农作物或同一农作物的不同品种之间,其抗病能力是存在着明显差异的。为了控制作物病害的发生,减少生产损失,深入了解病原物入侵的生理生化行为和农作物的抗病机理无疑对于广大的植物病理工作者、抗病育种工作者以及农业技术推广人员都是十分必要的。
In nature, due to the extremely wide distribution of pathogenic microorganisms (mainly fungi, bacteria and viruses) and their wide distribution channels, the crops will inevitably be infected by pathogens and lead to the occurrence of diseases; the growth and development of light crops are hindered and serious Plants die. However, there are significant differences in disease resistance between different crops or different varieties of the same crop. In order to control the occurrence of crop diseases and reduce production losses, it is undoubtedly necessary for the broad masses of plant pathologists, disease-resistant breeding workers and agricultural extension workers to understand the physiological and biochemical behaviors of pathogen invasion and the disease-resistant mechanism of crops well. .