| 云杉天然群体表型性状频率分布及多样性研究 |
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| 引用本文： | 罗建勋,宋鹏,辜云杰,张炜.云杉天然群体表型性状频率分布及多样性研究[J].西南林学院学报,2011,31(2):3-8,15. |
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| 作者姓名： | 罗建勋 宋鹏 辜云杰 张炜 |
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| 作者单位： | 四川省林业科学研究院,四川成都,610081 |
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| 基金项目： | 国家"十一五"科技攻关主题项目，林木、花卉基因资源发掘与种质创新利用研究 |
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| 摘 要： | 为探索云杉天然群体表型性状的频率分布特征,及其在频率水平上的表型多样性,根据性状值大小分组统计频率,绘制频率分布图,应用频率数据计算各群体的多样性指标值：表型多样度（Dp）和表型Shannon信息指数（Ip）,用多重比较与PCA主成分分析对10个群体分类。频数分布分析结果显示：云杉群体的表型性状数据基本符合正态分布;根据DP和IP对群体排序,按群体多样性从大到小依次为阿坝、卓尼、林坡、铁布、热务沟、黑水、巴西、川盘、大录、小金。多重比较与PCA主成分分析结果表明,云杉10个天然群体可分为3类,其中第1类的小金、热务沟群体的表型频率多样性较低,但性状值较大,位于云杉分布区的南部;第2类的7个群体表型频率多样性较大至中等,性状值较小至中等,位于云杉分布区的中部和北部;第3类的阿坝群体表型频率多样性最大,性状值偏小;DP和IP相关极显著（r=0.995）。
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| 关 键 词： | 云杉 天然群体 频率分布 表型多样度 Shannon信息指数 |
Study on Frequency Distribution of Phenotype Characteristics and Diversity of Picea asperata Natural Populations |
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| LUO Jian-xun,SONG Peng,GU Yun-jie,ZHANG Wei.Study on Frequency Distribution of Phenotype Characteristics and Diversity of Picea asperata Natural Populations[J].Journal of Southwest Forestry College,2011,31(2):3-8,15. |
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| Authors: | LUO Jian-xun SONG Peng GU Yun-jie ZHANG Wei |
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| Institution: | LUO Jian-xun,SONG Peng,GU Yun-jie,ZHANG Wei (Sichuan Academy of Forestry,Chengdu Sichuan 610081,China) |
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| Abstract: | The frequency distribution diagram was drawn according to the statistical frequency of the grouped property value to study the phenotype diversity of the natural populations of Picea asperata,and the distribution traits of characteristics frequency at frequency level.The phenotypic diversity degree and Shannon information index of phenotype were calculated with frequency data.Then 10 of the studied populations were clustered by means of multiple comparison and principal component analysis.The frequency dist... |
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| Keywords: | Picea asperata natural population frequency distribution phenotypic diversity degree Shannon＇s information index |
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