| 关于近交衰退值和杂种优势值的讨论 |
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| 引用本文： | 李宏.关于近交衰退值和杂种优势值的讨论[J].重庆工商大学学报(自然科学版),1996(1). |
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| 作者姓名： | 李宏 |
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| 作者单位： | 渝州大学生物系 |
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| 摘 要： | 当性状表现涉及到多个基因座位时，只要有关座位的基因型值以加性方式组合在一起，群体平均值就是各座位贡献的总和。而近交衰退值杂种优势值：一般｜Ｉｄ｜＝ＣＨＦ１．Ｉｄ的大小决定于显性程度、显性方向和基因对数。ＣＨＦ１的大小决定于显性程度、显性方向、双亲基因频率差和基因对数。因此，在一般情况下，Ｉｄ和ＣＨＦ１值的遗传含义是混杂不清的。只有当基因显性方向完全为正时，
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| 关 键 词： | 近交衰退 杂种优势 群体平均值 |
Discussion on Inbreeding Depression Value and Heterosis Value |
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| Li Hong.Discussion on Inbreeding Depression Value and Heterosis Value[J].Journal of Chongqing Technology and Business University:Natural Science Edition,1996(1). |
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| Authors: | Li Hong |
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| Abstract: | When the character involves many gene loci,only if the genetypic values of relativeloci are combined together in adding manner,the average value of population is the sum of every loous contribution. The inbreeding depression value and the heterosisvalueIn general, |Id |= CHF1.The value of Id is determined by dominance direction dominance degree and gene number. Thevalue of CHF1 is determined by dominance degree.dominance direction .the difference of gene frequency in parents and gene number. The genetic meaning of id and CHF1 is not clear. Only Whendominance direction of genes is completely positive, |
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| Keywords: | inbreeding depression heterosis POpulation average value |
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