近交系数的概念最初由S.Wtight(1921)提出时是作为结合的配子间遗传性的相关而赋予定义的,后来才由G.Malcot(1948)给予上述定义,已广泛应用这个定义。可以把近交系数理解为形成合子的两个配子来自同一共同祖先的概率。
参见近交系数。
从近交系数增量考虑,育种群公羊使用年限最多不应超过4年。
Useful life of breeding flock ram should not surpass 4 years according to inbreeding increment.
父系以近交法建系,近交系数达38—39%,母系以家系闭锁世代选择法建系。
The paternal line was developed from inbreeding, its inbreeding coefficient was 38-39%, While the maternal line was selected from generation among closed flock.
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