62份建兰种质表型多样性分析与综合评价  

Phenotypic Diversity Analysis and Comprehensive Evaluation of 62 Cymbidium ensifolium Resources

作　　者：傅巧娟[1] 赵福康[1] 张晓莹 李春楠[1] 阮若昕 Fu Qiaojuan;Zhao Fukang;Zhang Xiaoying;Li Chunnan;Ruan Ruoxin(Hangzhou Academy of Agricultural Sciences,Hangzhou,310024)

机构地区：[1]杭州市农业科学研究院,杭州310024

出　　处：《分子植物育种》2024年第21期7132-7141,共10页Molecular Plant Breeding

基　　金：杭州市农业科学研究院科技创新与示范推广基金项目(2019HNCT-07)资助。

摘　　要：为了提高建兰(Cymbidium ensifolium)种质的利用效率,对62份建兰种质资源的41个表型性状进行了遗传多样性分析。结果表明,建兰种质资源表型多样性丰富。数量性状变异程度较高,变异系数(CV)为15.6%~30.0%,其中花朵长度CV值最高。质量性状Shannon-Weaver多样性指数(I)在0.19~1.72之间,颜色性状的I值均较高;叶片无扭曲无叶艺、花青甙无显色和萼片、花瓣、唇瓣及蕊柱等“有”斑点居多。主成分分析提取11个主成分,累计贡献率达79.421%,可反映建兰的总体形态表现;并进行了综合评价,其中‘红草红荷’表现最优。聚类分析结果显示,在欧氏距离为8.4处可将62份建兰种质划分为两大类,其中第一大类23份种质以素心的为主,第二大类的花色、花纹多样性丰富。研究结果为更好地了解和利用建兰种质提供了理论依据。To improve the utilization efficiency of C.ensifolium germplasms,genetic diversity analysis were conducted based on 41 phenotypic traits of 62 C.ensifolium germplasms.The results showed that the phenotypic diversity of C.ensifolium germplasms was rich and the variation of quantitative characters was high.The coefficient of variation(Cv)ranged from 15.6% to 30.0%,and the highest value of Cv was detected in flower length.The Shannon-Weaver indexes(1)of qualitative traits ranged from 0.19 to 1.72,and the I value of all the color characters was higher;leaves with no curing and art,peduncle anthocyanin coloration with no color,sepals,petals,lips and columns with spots.11 principal components were extracted by principal component analysis(PCA),the cumulative contribution rate reached 79.421%,which could reflect the integral phenotype of C.ensifolium germplasms.All the resources were comprehensively assessed by means of PCA,and C.ensifolium'Hongcaohonghe'had the best compre hensive performance.Based on cluster analysis,all the accessions were classified into two major groups when the Euclidean distance was 8.4.The first category included 23 C.ensifolium germplasms with plain heart mainly,and the second category had rich color and pattern.The results provided a theoretical basis for better understanding and utilization of C.ensifolium germplasms.

关 键 词：建兰(Cymbidium ensifolium) 表型多样性 综合评价 

分 类 号：S682.31[农业科学—观赏园艺]