摘要
为了解槟榔种质资源遗传多样性特征,提高槟榔种质资源利用效率,通过遗传多样性分析、相关性分析、主成分分析及聚类分析对中国热带农业科学院椰子研究所槟榔种质资源圃收集的150份槟榔种质资源的8个农艺性状和品质性状进行鉴定评价。结果表明,8个性状的遗传多样性指数(H’)的变化范围为4.97~5.31,变异系数范围为9.60%~31.75%,多酚含量的变异系数最大。相关性分析发现,多酚含量与果长、单果质量和粗纤维含量呈极显著负相关;主成分分析提取4个主成分,累计贡献率86.457%,代表槟榔表型性状的大部分信息;聚类分析将供试种质分为4个类群。其中,Ⅱ类群多酚含量较高,Ⅲ类群果实最宽,节间长最短,筛选出10份矮秆、9份粗纤维含量低和6份多酚含量高的种质,可作为槟榔育种的优质亲本。
In order to understand the genetic diversity characteristics of areca nut germplasm resources and improve the utilization efficiency of areca nut germplasm resources,eight agronomic and quality traits of 150 areca nut germplasm resources in areca nut genetic resources bank collected by Coconut Research Institute,Chinese Academy of Tropic Agricultural Sciences were identified and evaluated by genetic diversity analysis,correlation analysis,principal component analysis and cluster analysis.The results showed that the genetic diversity index(H′)ranged from 4.97 to 5.31,and the coefficient of variation ranging from 9.60%to 31.75%,of which the coefficient of variation of polyphenol content was the largest.The correlation analysis result showed that the content of polyphenols showed extremely significant negative correlation with fruit length,fruit weight and crude fiber content.Four principal component factors were extracted by principal component analysis,and the cumulative contribution rate was 86.457%,which represented the main information of the phenotypic traits of areca nut.Cluster analysis divided the tested areca nut germplasm materials into four groups,among them,the second group had higher polyphenol content,and the third group had the wideset fruits and the shortest internode length.10 dwarf accessions,9 low crude fiber content accessions and 6 high polyphenol content accessions were selected,which could be used as elite parents for areca nut breeding.
作者
张雨洁
郑馨
王娜娜
黄丽云
叶剑秋
齐兰
ZHANG Yujie;ZHENG Xin;WANG Nana;HUANG Liyun;YE Jianqiu;QI Lan(Coconut Research Institute,Chinese Academy of Tropic Agricultural Sciences/Hainan Engineering Research Center of Arecanut Industry,Wenchang,Hainan,571339,China;College of Plant Science and Technology,Huazhong Agricultural University,Wuhan,Hubei,430070,China;National Nanfan Research Institute,Chinese Academy of Agricultural Sciences,Sanya,Hainan,572024,China)
出处
《中国南方果树》
北大核心
2025年第4期56-61,共6页
South China Fruits
基金
海南省科技专项项目(ZDYF2022XDNY205)
农业农村部作物种质资源保护项目(2024NWB048)资助。
关键词
槟榔
种质资源
遗传多样性
相关性分析
聚类分析
Areca catechu L.
germplasm resources
genetic diversity
correlation analysis
cluster analysis
