西南林业大学学报2023，Vol.43Issue(11)：8-18,11.DOI:10.11929/j.swfu.202210066
蝴蝶兰不同品种表型性状遗传多样性分析
Analysis of Phenotypic Genetic Diversity of Various Phalaenopsis Varieties
摘要
Abstract
In this study,34 phenotypic traits involving leaves,floriferous shoot and floral organs of 72 Phalaenopsis germplasm resources were measured and evaluated by using means of phenotypic diversity analysis,principal component analysis and cluster analysis,the genetic diversity of germplasm phenotypic traits was ex-plored.The results showed that the majority traits in 72 Phalaenopsis varieties had exhibited high degree of vari-ation and rich types,the variation of quantitative traits was 16.39％-157.36％,and the Shannon-Wiener diversity index of qualitative traits was 0.38-1.32,the coefficient of variation of quantitative traits for leaf-related traits was small and stable,but the level of diversity of quality traits for leaf-related traits was relatively high.R-type cluster analysis divided the 34 traits into 3 clusters,with cluster Ⅰ containing phenotypic traits of flower and leaf,indicat-ing a close relationship between the phenotypes of flower and leaf,and clusters Ⅱ and Ⅲ only contained inflores-cence length,longest leaf length,plant size and peduncle length,it is indicated that these 4 phenotypic traits in-cluding inflorescence length have the relationship for independent evolutionary.Q-clustering analysis divided the species of Phalaenopsis into 4 primary groups,group Ⅱ could be subdivided into 7 subgroups.The germplasm of subgroups Ⅱ-1 and Ⅱ-2 could provide parental choices for large-flowered and medium-flowered breeding,the germplasm of subgroups Ⅱ-3,Ⅱ-4,Ⅱ-5 and Ⅱ-7 could provide parental choices for small-flowered breeding,the germplasm of subgroup Ⅱ-4 could provide parental choices for fragrant-flowered Phalaenopsis breeding,and the genetic distances of'JB5342','JB5184','JB5541','JB3697','Anna'and'JB5725'were far with the most samples,and they could be selected as the significant hybrid parents.Principal component analysis showed that flower width,petal length,petal width,sepal length,flower length,and sepal width had high absolute value of eigen-vector and were the main factors causing the phenotypic variation of Phalaenopsis.关键词
蝴蝶兰/品种资源/表型性状/遗传多样性Key words
Phalaenopsis/variety resource/phenotypic trait/genetic diversity分类
农业科技引用本文复制引用
王钦,黄捷,涂松,康阳,王菲,陈秀铭,彭东辉..蝴蝶兰不同品种表型性状遗传多样性分析[J].西南林业大学学报,2023,43(11):8-18,11.基金项目
国家重点研发计划项目(2019YFD1001000)资助. （2019YFD1001000）
