我国主栽一串红资源的表型多样性分析  

Analysis of Phenotypic Diversity of Major Salvia splendens Germplasm Resources in China

作　　者：傅巧娟[1] 李春楠[1] 陈一[1] 赵福康[1] 孙瑶[1] 

机构地区：[1]杭州市农业科学研究院,杭州310024

出　　处：《植物遗传资源学报》2015年第2期294-299,共6页Journal of Plant Genetic Resources

基　　金：杭州市科技计划项目(20120332H03)

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个质量性状方面对我国主栽的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较高。外引与中国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份资源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。In order to improve the use efficiency of Salvia splendens germplasm resources,the phenotypic diversity of 20 major varieties in China was evaluated in terms of 20 quantitative traits and 5 qualitative traits. The results indicated that the phenotypic diversity was abundant in Salvia splendens cultivars,and higher variation of phenotypes was found among 20 accessions. The total variation degree and abundance in phenotypes of exotic varieties were similar to that of domestic varieties. Shannon-Weaver diversity index of 25 traits ranged from 0. 23 to 1. 97,which was higher in five quantitative traits including main stem diameter,crown diameter,petiole length,flowering time,and internode length,and in two qualitative traits such as leaf bubble protuberant degree and petiole color intensity. PCA analysis revealed that top 5 principal components had the variance cumulative contribution rate of83. 96%,which could reflect the integral phenotypes of Salvia splendens. The average Euclidean distance among 20 accessions was about 7. 0. The 20 accessions could be classified into two groups such as the high plant group and the dwarf plant group clustered by UPGMA when the Euclidean distance was about 8. 5. There was only 1 variety（ Gouhuo） in the former,whereas 19 cultivars in the later,which could be further divided into 4 sub-groups when the Euclidean distance was about 7. 2.

关 键 词：一串红 表型多样性 主成分分析 聚类分析 

分 类 号：S681.4[农业科学—观赏园艺]