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作物学报 ›› 2013, Vol. 39 ›› Issue (11): 2000-2008.doi: 10.3724/SP.J.1006.2013.02000

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

云南茶树种质资源的表型遗传多样性

蒋会兵,宋维希,矣兵,李友勇,马玲,陈林波,田易萍,段志芬,刘本英,梁名志*   

  1. 云南省农业科学院茶叶研究所 / 云南省茶树种质资源创新与配套栽培技术工程研究中心,云南勐海 666201
  • 收稿日期:2013-02-18 修回日期:2013-06-09 出版日期:2013-11-12 网络出版日期:2013-08-15
  • 通讯作者: 梁名志, E-mail: liangmingzhi@126.com
  • 基金资助:

    本研究由国家自然科学基金项目(31160175),农业部作物种质保护项目(NB2012-2130135),国家科技部科技基础条件平台建设项目(2004DK30390-34),国家科技基础工作专项(2006FY110700)和云南省重点新产品开发计划项目(2010BB012)资助。

Genetic Diversity of Tea Germplasm Resources in Yunnan Province Based on Phenotypic Characteristics

JIANG Hui-Bing,SONG Wei-Xi,YI Bing,LI You-Yong,MA Li,CHEN Lin-Bo,TIAN Yi-Ping,DUAN Zhi-Fen,LIU Ben-Ying,LIANG Ming-Zhi*   

  1. Tea Research Institute, Yunnan Academy of Agricultural Sciences / Engineering Research Centers of Tea Germplasm Resources Innovation and Its Matching Cultivated Techniques, Menghai 666201, China
  • Received:2013-02-18 Revised:2013-06-09 Published:2013-11-12 Published online:2013-08-15
  • Contact: 梁名志, E-mail: liangmingzhi@126.com

摘要:

对云南10个地区的830份茶树种质资源主要表型性状的遗传多样性分析和比较表明,云南茶树种质资源具有丰富的表型遗传多样性,13个描述型性状的遗传多样性指数在0.64~1.40之间,平均为1.04以芽叶色泽较高,叶基较低;不同地区的茶树资源遗传多样性指数在0.76~0.99之间,以红河地区较高,其次是临沧和文山地区,以昭通地区较低。14个数值型性状的变异系数在10.27%~48.14%之间,平均为26.43%,以酚氨比较大,水浸出物含量较小;不同地区的茶树资源变异系数在16.09%~25.75%之间,以文山、红河地区较大,昭通、大理地区较小。茶树资源表型性状的遗传多样性和变异水平显示东南部>西部>东北部的趋势。通过聚类分析,10个地区的茶树资源划分为3个地理组,东北部的昭通和东南部的红河各单独聚为一组,其他8个地区聚为第3组,显示云南茶树资源存在东南部、西部、东北部生态地理的分化,初步推断东南部为云南茶树资源表型遗传多样性分布中心。

关键词: 茶树, 种质资源, 表型性状, 遗传多样性, 云南省

Abstract:

We analyzed and compared the genetic diversity of main phenotypic characteristics in 830 tea germplasm, from ten different areas in Yunnan Province. The results showed Section Thea had the rich genetic diversity, the diversity index of descriptive traits was 0.64–1.40, with the average of 1.04, and relatively higher in young shoot color, the lowest in leaf base shape; the diversity index was 0.76–0.99, with the highest in Honghe prefecture, the second in Lincang and Wenshan prefectures, the lowest in Zhaotong prefecture. The variation coefficient of numerical traits was 10.27%–48.14%, with the average of 26.43%, and relatively higher in the ratio of polyphenol to amino acid, and the lowest in water extract; the variation coefficient was 16.09%–25.75%, with the highest in Wenshan and Honghe prefectures, and the lowest in Zhaotong and Dali. The genetic diversity and variation coefficient showed a tendency of Southeast>West>Northeastern in phenotypic characteristics. By cluster analysis, tea germplasm resources from ten regions was divided geographically into three groups, Zhaotong and Honghe for each group respectively, others for the third group. The results demonstrate an obviously ecogeographical differentiation among Southeast, West, and Northeast areas of tea germplasm in Yunnan, and Southeast is the distribution center with genetic diversity in phenotypic characteristics.

Key words: Section Thea, Germplasm resource, Phenotypic characteristics, Genetic diversity, Yunnan Province

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