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