Abstract: The plant self-incompatibility (SI) response is a common phenomenon in flowering plants, which prevents self degradation and maintains the genetic diversity of a reproductive segregation. The mechanism of self-incompatibility has diversity and independence, self-incompatibility mechanism among the various divisions is the origin of different, and genes of self-incompatibility are not homologous. This article summarized the classifications of plant self-incompatibility, and expounded different kinds of self-incompatibility mechanism according to the classification. Based on the results of summaries in this article, the research difficulties and the directions of self incompatibility were further analyzed.

Key words: self incompatibility, single factor SI, double factor SI, corn photo-thermo-sensitive self incompatible line

摘要： 植物自交不亲和反应(self-incompatibility，SI)是开花植物防止自交退化，保持遗传多样性的一种常见的生殖隔离现象。自交不亲和的机制具有多样性及独立性，各个科之间的自交不亲和机制起源不同而且不亲和基因之间也不存在同源性。归纳总结了植物自交不亲和的几种分类情况，并按其分类对不同种类的自交不亲和机制分别进行了阐述。在此基础上，对植物自交不亲和领域研究的难点和方向进行了分析和展望。

关键词: 自交不亲和, 单因子SI, 双因子SI, 玉米光温敏自交不亲和系