loading浙江农业学报 Acta Agriculturae ZhejiangensCs, 2019,31(9) : 1405 - 1415 http：//www. zjnyxb. cn谢文钢，李晓松,李伟，等.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.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，四川成成611130)摘要:为保护护鉴定四川茶树资源，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;遗传多样性中图分类号:S571. 1
文献标志码:A 文章编号：1004-1524(2019)09-1405-11Genetie diversity of “ Small & MeSium Leaf\ tea resources in Sichuan Provicce based ocphecotypie characteristic-XIE Wengang, LI Xiaosong, LI Wei, TANG Qian!(College of HortFulturr, Sichuan Agricultural University, Chengdu 611130, China)Abstract: In order to protect and identify tes resources, and exccvate special resources in Sichuan Provincc, princi-
pal component analysis ( PCA) and cluster analysis were carried out on 30 phenotypic traits of 109 “ Small & Medi-
um Leaf\ tes resources in Sichuan. The results showed that the wriation coefficient and diversity index of “ Small &
Medium Leaf\ tea resources in Sichuan Province were 32. 27% and 0. 98 , respectively. There were obvious ^￡60
ences in phenotypic traits of tea resources and rich diversity. Principal component analysis ( PCA) and cluster analy-
sis showed that the cumulative contribution rate of 12 principal component factors was 71. 14%. The materialr 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 41X1- ent-provenance teas were dbferent, which provided references for structure of core germplasm bank of Sichuan tea
plants and selection of tea varieties.Key wordt: tea ； germplasm resource ； phenotypic traits ； diversity茶树种质资源，又称遗传资源、品种资源、基 进品种、品系等[1](四川茶树品种资源分布广,因库等，包括野生茶树、地方品种、选育品种、引 类型多，主要茶树资源有四川中小叶群体种、古收稿日期：2019-04-1基金项目四川省科技厅茶茶育种攻关课题(2016NYZ0037)作者简介:谢文有(1987—)，男，四川泸州人，博士研究生，主主从事茶茶种质资源与遗传育种研究。E-mail： xiewengang62 @163. cm* 通信作者，唐茜,E-mail: tangqi2008@ 126. com