我国主栽一串红资源的表型多样性分析
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杭州市科技计划项目(20120332H03)


Phenotypic Diversity Analysis of Major Variaties of Salvia Splendens in China
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    摘要:

    为了提高一串红品种资源的利用效率,从20个数量性状和5个质量性状对我国主栽的20份一串红种质资源的表型遗传多样性进行了研究。结果表明一串红表型多样性丰富,品种间表型性状变异程度高。进口与国产两个类群间表型变异程度及丰富性都比较相似。25个表型性状的Shannon-Weaver多样性指数变化于0.23-1.97之间,数量性状中以主茎直径、花冠直径、叶柄长、始花时间和花间长的多样性指数较高,质量性状中则以叶面泡状突起程度及叶柄显色强度多样性指数较高。主成分分析筛选出对总体方差累计贡献率达83.96%的前5个主成分,可反映一串红资源的总体形态表现。20份材料间欧氏遗传距离变化于2.26-12.72之间,平均遗传距离约为7.0。在欧氏距离约为8.5时,参试的20份资源可分为高生种和矮生种两大类,前者仅包含1个品种(篝火);而后者包含19个品种,且在欧氏距离约为7.2处又可进一步分为4个亚类。

    Abstract:

    In order to improve the efficiency of utilizing Salvia splendens germplasm resources, the phenotypic genetic diversity was evaluated based on 20 quantitative traits and 5 qualitative traits of 20 major varieties in China. The results indicated that the phenotypic genetic diversity was abundant in Salvia splendens cultivars and there was high variation among 20 accessions in phenotypic traits.The total variation degree and abundance in phenotypic traits of exotic varieties was similar to that of domestic varieties. Shannon-Weaver diversity index of 25 phenotypic traits ranged from 0.23 to 1.97, and in quantitative traits it was higher for main stem diameter, crown diameter, petiole length, flowering time and internode length, while in qualitative traits it was higher for leaf bubble protuberant degree, petiole color intensity. Five principal components were screened using PCA based on the variance cumulative contribution rate of 83.96%, which could reflect the integral phenotype of Salvia splendens. The Euclidean distance among all the 20 accessions varied from 2.26 to 12.72, with average about 7.0. The 20 accessions could be classified into two groups clustered by UPGMA based on the Euclidean distance at about 8.5:the high plant group and the dwarf plant group. The former included only 1 variety (Gouhuo) and the later included 19 cultivars which could be further divided into 4 sub-groups at the Euclidean distance about 7.2.

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傅巧娟,李春楠,陈一,等.我国主栽一串红资源的表型多样性分析[J].植物遗传资源学报,2015,16(2):294-299.

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  • 收稿日期:2014-04-24
  • 最后修改日期:2014-05-23
  • 录用日期:2015-02-03
  • 在线发布日期: 2015-02-03
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