| 白桦幼苗株高和地径的遗传效应分析 |
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| 引用本文： | 李绍臣,杨传平,丁宝建,高福玲,刘桂丰,姜静,姜廷波.白桦幼苗株高和地径的遗传效应分析[J].农业生物技术学报,2008,16(1). |
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| 作者姓名： | 李绍臣 杨传平 丁宝建 高福玲 刘桂丰 姜静 姜廷波 |
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| 作者单位： | 东北林业大学林学院 吉林省林业科学研究院 |
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| 摘 要： | 采用P(P -1)/2 完全双列杂交设计对6 个白桦优良个体生长性状进行一般配合力( GCA) 和特殊配合力(SCA) 分析，结果表明：2个性状同时受加性和非加性效应控制。同一亲本不同性状的一般配合力差异较大,同一性状在不同亲本间的一般配合力差异也比较大,在6个亲本中Q2 是最好的亲本，M2次之。同一性状不同组合和同一组合各性状的SCA 效应值均有较大差异，试验中苗高地径的特殊配合力最高的是8×Q1，苗高地径两个性状的一般配合力均高于特殊配合力，苗高地径的遗传力属于高强度遗传力，可以进行早期选择。
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| 关 键 词： | 白桦 双列杂交 一般配合力 特殊配合力 遗传力 |
| 收稿时间： | 2007-6-21 |
| 修稿时间： | 2007-7-25 |
Genetic Effects of Seed and Seedling traits of Betula in Seedling Height and Seedling Diameterat Ground |
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| Abstract: | The general combining ability (GCA) and specific combining ability (SCA) of 6 selected optimum parents of Betula platyphylla Suk in a P(P-1)/2 diallel cross were estimated by analyzing two growth phenotypes of their offspring. The results showed that two phenotype were controlled by additive effect and non-additive effect simultaneously. The general combining ability of the different phenotypes of the same parent has significant difference, and the general combining ability of the same phenotype between different parents also has significant difference. Parent Q2 is the best one, M2 take second place. Moreover, the specific combining ability of the same phenotype in various cross combination and the two phenotype of the same combination also vary prominently. After investigation and statistical analysis, we found the cross 8×Q1 has the highest SCA of height and ground diameter, and the GCA of height and ground diameter were higher than SCA. The heritability of height and ground diameter were strongly heritable, suggest that they can be used for early selection. |
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