上面二、三讲我们讨论了相对性状不同品种杂交后代表现的遗传动态,及其在育种实践上的应用。那么,不同亲本来源和不同交配方式,其后代表现的遗传动态又是怎么样呢?下面谈谈自交、回交和杂交的后代遗传效应及其理论解释。一、近亲繁殖 1.近亲繁殖的概念近亲繁殖是指血统或亲缘关系相近的两个个体间的交配。所 The above two or three above, we talked about the relative traits of different varieties of hybrid progeny of the genetic dynamics, and its application in breeding practice. So, different sources of parents and different ways of mating, the genetic behavior of their offspring is like? Here to talk about self-made, backcross and crossbreeding genetic effects and theoretical explanations. First, the inbreeding 1. Inbreeding concept Inbreeding refers to the lineage or kinship between two individuals mating. The