在简要介绍植物（包括果树）自交不亲和性与生理控制机制的基础上，着重对梨、苹果、杏等果树自交不亲和性的研究进行了综述，内容包括花柱内花粉管生长特点、花柱S糖蛋白的特性与作用机理以及果树自交不亲和的分子生物学研究，并提出了该领域有待研究的问题。 Based on the brief introduction of the self-incompatibility and physiological control mechanisms of plant (including fruit trees), the research on the self-incompatibility of fruit trees such as pear, apple and apricot is reviewed, including the pollen tube growth Characteristics, mechanism and function mechanism of style S glycoprotein and self-incompatible fruit tree molecular biology research, and put forward the problems to be studied in this field.