| 群体融合对平均适应力的影响 |
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| 引用本文： | 王身立,戴君惕.群体融合对平均适应力的影响[J].湖南师范大学自然科学学报,2000,23(1):53-56. |
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| 作者姓名： | 王身立 戴君惕 |
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| 作者单位： | [1]湖南师范大学生命科学学院遗传及发育生物学系 [2]湖南农业大学杂交小麦研究所 |
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| 基金项目： | 湖南省教委资助项目!(1489) |
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| 摘 要： | 探讨了群体融合对平均适应力的影响。显性完全且选择不利于纯合子ａａ时,无论常染色体遗传或伴性遗传,群体融合均导致平均适应上升,显性完全且选择不利于ＡＡ和Ａａ时,群体融合在常染色体遗传时导致平均适应力下降,而伴性遗传时导致平均适应力上升。无显性且为常染色体遗传时,群体融合对平均适应力无影响,而伴性遗传时导致平均适应力下降。超显性且为常梁色体遗传时,群体融合导致平均适应力上升,伴性遗传时也导致平均适应力
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| 关 键 词： | 群体遗传学 群体融合 适应力 |
| 文章编号： | 1000-2537(2000)01-0053-04 |
| 修稿时间： | 1999-10-23 |
Influence of Population Fusion on Fitness |
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| WANG Shen li ,DAI Jun ti.Influence of Population Fusion on Fitness[J].Journal of Natural Science of Hunan Normal University,2000,23(1):53-56. |
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| Authors: | WANG Shen li DAI Jun ti |
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| Institution: | WANG Shen li 1,DAI Jun ti 2 |
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| Abstract: | Effect of population fusion on
fitness was explored. When dominance is complete and selection is not favourable to
homozygote aa, the fitness is greater after fusion than that before fusion, whether in
autosome or in sex-linded inheritance. When dominance is complete and selection is not
favourable to AA and Aa, the fitness is smaller after fusion than that before fusion in
autosome inheritance and greater in sex-linked inheritance. In non-dominance, i. e. when
selcetion is not favourable to Aa and aa, the fitness is smaller after fusion than that
before fusion in sex-linded inheritance and no change in autosome inheritance. In
overdominance, i. e. when selection is not favourable to homozygote AA and aa but is
farourable to heterozygote Aa, the fitness is greater after fusion than that before fusion
in autosome inheritance and in sex-linked inheritance. |
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| Keywords: | population genetics population fusion fitness |
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