| 摘要: |
| 采用Monte Carlo方法研究了群体在3种规模7种留配体制下50个世代内的近交。结果表明,最优留种最优选配是近期内控制近交最有效的留配体制。非同胞随机交配和最优选配在随机留种下均可有效地控制群体近交。而在家系等数留种下只能控制起初若干世代的近交,可控制的世代数因群体规模而异。选配增加了世代内个体近交系数的一致性,但增大了世代间近交量的差异。 |
| 关键词: 近交系数,留配体制,小群体,Monte Carlo |
| DOI： |
| 分类号: |
| 基金项目: |
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| A Study of Inbreeding in Small populations Under Different Mating Systems |
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Wang Jinliang Qiu Huai Yue Hao
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| Abstract: |
| Monte Carto method is used to investigate the effect of mating systems on inbreeding in small populations. The inbreeding coefficient is simulated for 50 generations in 3 populations under 7 mating systems. The results indicated that the optimum selection and the optimum mating were the most effective mating system in controlling inbreeding at present. Non-sib random mating and the optimum selection and mating will effectively control inbreeding in population under the random selection, but can only control inbreeding in the early several generations. As a result, the number of controlled generations is different because of diffent sizes of populations. Selection and mating increases the coancestry of inbreeding coefficient of individuals in the same generations, but expand the difference of inbreeding quantities among generations. |
| Key words: inbreeding coefficient, mating system, small population, Monte Carlo, |
