四川地方中小叶茶树资源的表型遗传多样性

doi:10.3969/j.issn.1004-1524.2019.09.02

浙江农业学报 ›› 2019, Vol. 31 ›› Issue (9): 1405-1415.DOI: 10.3969/j.issn.1004-1524.2019.09.02

四川地方中小叶茶树资源的表型遗传多样性

谢文钢, 李晓松, 李伟, 唐茜^*

四川农业大学园艺学院,四川成都 611130

收稿日期:2019-04-01 出版日期:2019-09-25 发布日期:2019-10-11
通讯作者: *唐茜,E-mail: tangqi2008@126.com
作者简介:谢文钢(1987—),男,四川泸州人,博士研究生,主要从事茶树种质资源与遗传育种研究。E-mail: xiewengang62 @163.com
基金资助:
四川省科技厅茶树育种攻关课题(2016NYZ0037)

Genetic diversity of “Small & Medium Leaf” tea resources in Sichuan Province based on phenotypic characteristics

XIE Wengang, LI Xiaosong, LI Wei, TANG Qian^*

College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China

Received:2019-04-01 Online:2019-09-25 Published:2019-10-11

摘要/Abstract

摘要： 为保护和鉴定四川茶树资源,并进行特异资源的挖掘,对109份四川中小叶茶树资源的30个表型性状进行统计分析和主成分聚类分析。研究表明,四川中小叶茶树资源的变异系数和多样性指数平均分别为32.27%和0.98,茶树资源性状差异明显,多样性较丰富。主成分聚类分析显示,12个主成分因子的累积贡献率为71.14%,将供试材料聚类分为8个类群,且与供试材料的原产地关系较小。四川中小叶茶树资源表型性状遗传多样性较丰富,且各原产地茶树表型性状差异较大,可为四川茶树核心种质库的构建和茶树良种选育提供参考。

关键词: 茶树, 种质资源, 表型性状, 遗传多样性

Abstract: In order to protect and identify tea resources, and excavate special resources in Sichuan Province, principal component analysis (PCA) and cluster analysis were carried out on 30 phenotypic traits of 109 “ Small & Medium Leaf” tea resources in Sichuan. The results showed that the variation coefficient and diversity index of “Small & Medium Leaf” tea resources in Sichuan Province were 32.27% and 0.98, respectively. There were obvious differences in phenotypic traits of tea resources and rich diversity. Principal component analysis (PCA) and cluster analysis showed that the cumulative contribution rate of 12 principal component factors was 71.14%. The materials which were tested were clustered into 8 groups, and had little correlation with their provenance. The “Small & Medium Leaf” tea resources in Sichuan Province had rich phenotypic-traits genetic diversity, and phenotypic traits of different-provenance teas were different, which provided references for structure of core germplasm bank of Sichuan tea plants and selection of tea varieties.

Key words: tea, germplasm resource, phenotypic traits, diversity

中图分类号:

S571.1

谢文钢, 李晓松, 李伟, 唐茜. 四川地方中小叶茶树资源的表型遗传多样性[J]. 浙江农业学报, 2019, 31(9): 1405-1415.

XIE Wengang, LI Xiaosong, LI Wei, TANG Qian. Genetic diversity of “Small & Medium Leaf” tea resources in Sichuan Province based on phenotypic characteristics[J]. , 2019, 31(9): 1405-1415.

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四川地方中小叶茶树资源的表型遗传多样性

Genetic diversity of “Small & Medium Leaf” tea resources in Sichuan Province based on phenotypic characteristics

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