杂种松（PSEUDOTSUGA MENZIESII （Mirb.） Franco）同工酶基因型与数量性状的关系。
Associations between Allozyme Genotypes and Quantitative Traits in Douglas-Fir [PSEUDOTSUGA MENZIESII (Mirb.) Franco].
机构信息
Faculty of Forestry, University of British Columbia, Vancouver, B.C. V6T 1W5, Canada.
出版信息
Genetics. 1982 May;101(1):103-15. doi: 10.1093/genetics/101.1.103.
Effects of maternal genotypes for eight enzyme loci on seven quantitative traits in 41 half-sib families were determined. Heritability estimates for the quantitative traits were highly significant and ranged from 0.57 to 0.86. Only six of 112 comparisons (56 comparisons for each of the genotypes and 56 for homozygous versus heterozygous contrasts) were statistically significant (P < 0.05). None of these significant comparisons could be associated with either a particular allele or a particular genotype. No heterotic effects were observed when the homozygous genotypes were compared with the heterozygous ones. Because the quantitative traits are highly correlated, a discriminant function analysis was performed to obtain the two most important canonical variates that accounted for 75% of the variance in the quantitative traits. There were no significant associations among enzyme loci and the two canonical variates. I conclude that, in this study, enzyme genotypic differences do not influence the quantitative traits to a major extent.
测定了 41 个半同胞家系中 8 个酶位点的母本基因型对 7 个数量性状的影响。数量性状的遗传力估计值非常显著，范围从 0.57 到 0.86。112 次比较中只有 6 次（每种基因型和纯合子与杂合子对比各有 56 次）具有统计学意义（P < 0.05）。这些显著比较都不能与特定的等位基因或特定的基因型相关联。当比较纯合基因型与杂合基因型时，没有观察到杂种优势效应。由于数量性状高度相关，进行了判别函数分析以获得两个最重要的典型变量，它们占数量性状方差的 75%。酶位点与两个典型变量之间没有显著的关联。我得出结论，在这项研究中，酶基因型差异并没有在很大程度上影响数量性状。
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