...当被选个体参与家系均值的计算，这是正规的家系选择；第二种是被选个体不参与家系均值的计算，实际上是同胞选择（sib selection）。家系选择适用于遗传力低的性状，在相同留种率的情况下，这种选择方法所需选留群体的规模，要比个体选择大。
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half-sib selection 半同胞选拔
half-sib recurrent selection 半同胞轮回选择
full sib family selection 全同胞家
half-sib-family selection 半同胞家系选择
full-sib recurrent selection 全同胞轮回选择
full-sib reciprocal recurrent selection 相互全同胞轮回选择
half-sib reciprocal recurrent selection 半同胞相互轮回选择
The same basic population C0 had been selected for four cycles with Dominant male sterile wheat by means of the half-sib mating recurrent selection and the mass recurrent selection programmes.
以显性雄性不育小麦为材料，采用改良半姊妹和混合轮回选择两种方案，对同一基础群体C_0进行了四轮选择。
The ultimate refinement of advanced-generation selection is the development of indices which optimize the relative weighting of half-sib full-sib and individual tree performance.
下一代最后的精选，就是制定适合于全同胞、半同胞和单株表现的相对权重的指数。
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