作物抗病性常受生长阶段或其器官发育期的影响。一般来说,随着植株成熟,其抗病力逐渐增强,并随叶片的衰老而减弱。多年生作物的器官年龄比株龄更有意义。据报道,叶龄影响对病原真菌的抗性,咖啡浆果的发育期也影响它对浆果病的抗 Crop disease resistance is often affected by the growth stage or its organ development. In general, as the plants mature, their disease resistance gradually increases and decreases with leaf senescence. Organogenesis of perennial crops is more meaningful than age. It is reported that leaf age affects the resistance to pathogenic fungi and the development of coffee berry also affects its resistance to berry disease