广西茶树资源生化成分多样性分析

Biochemical Diversity Analysis of Tea Germplasms in Guangxi

对国家种质杭州茶树圃保存的来源于广西的98份茶树资源主要生化成分进行了评价鉴定和遗传多样性分析。结果发现,广西地方茶树资源的生化成分存在丰富的多样性和变异,平均遗传多样性指数达到1.90,平均变异系数达到25.8%。通过多变量的主成分分析,前7个主成分代表了茶树生化成分多样性的86.75%的信息。基于生化成分,把98份资源聚类划分为3个类群。第1类群大部分为红绿茶兼制的资源,第2类群大部分为适制红茶的资源,第3类群大部分为适制绿茶的资源。并从中筛选出一批生化成分特异的资源。

Biochemical composition and diversity analysis of 98 tea germplasms originating from Guangxi were conducted.The results showed that the biochemical diversity and variation were high in Guangxi tea germplasms.The average diversity index and coefficient of variation were 1.90 and 25.8%,respectively.In principal component analysis,the first seven principal components represented 86.75% of the biochemical diversity.Based on the biochemical data,98 germplasms were clustered into 3 groups.The germplasms in the first group suited to be processed green and black tea.The germplasms in the second group suited to be processed black tea.The germplasms in the third group suited to be processed green tea.A set of special germplasms on some biochemical composition were selected.