近交可定义为比群体内平均亲缘关系更密切的个体之间的交配。这种现象对于轮回选择是很重要的,因为天然近交是发生在小群体中的。轮回选择重新组合被选个体,这将由于随机遗传漂移而最终导致近交衰退,因为通常只有10至20个个体参加这种重组(Hallauer 和Miranda,1988)。总之,随着群体容量(入选系的数量)的下降,选择效应会变小并停止在 Inbreds can be defined as matings between individuals closer to the average kinship in a cohort. This phenomenon is important for reincarnation because natural inbreeding occurs in small groups. Reincarnation Recombination of selected individuals will eventually lead to the decline of inbreeding due to random genetic drift as usually only 10 to 20 individuals participate in this recombination (Hallauer and Miranda, 1988). In summary, as the population capacity (number of selected lines) decreases, the selection effect becomes smaller and stops