茶叶通讯2025，Vol.52Issue(1)：26-33,8.DOI:10.20178/j.cnki.ISSN1009-525X.2025.01.004
不同茶树杂交F1代主要生化成分遗传多样性分析
Analysis of Genetic Diversity of Main Biochemical Components in F1 Generation of Different Tea Plant Hybrids
摘要
Abstract
In order to deeply analyze the genetic diversity of biochemical components in the F1 generation hybrids of different tea varieties,and screen excellent tea germplasm resources,providing material basis for the exploration and utilization of specific tea resources and the breeding of new tea varieties.In this study,38 new tea strains of different hybrid F1 generations were used as research materials,the genetic diversity of multiple main biochemical components was analyzed based on correlation analysis,cluster analysis and principal component analysis.The research results showed that the F1 generations hybrids of different tea varieties exhibited significant differences and rich genetic diversity in biochemical components;The average genetic diversity index of 12 traits was 1.96,the coefficient of variation ranged from 5.21%to 50.21%,and the average coefficient of variation was 24.40%.The correlation analysis of various biochemical components showed that the phenol ammonia ratio and tea polyphenols,and epicatechin(EC)and epicatechin gallate(ECG),tea polyphenols and water extracts,epigallocatechin gallate(DL-C)and epicatechin(EC)exhibited significant positive correlations,while amino acids and tea polyphenols,amino acids and phenol ammonia ratio,amino acids and ECG exhibited extremely significant negative correlations.The results of principal component analysis showed that the cumulative contribution rate of the first three principal components reaches 72.492%.The 38 different hybrid F1s can be divided into two groups,the first group contains 20 resources,mainly characterized by higher amino acid content and phenol ammonia ratio,suitable for making green tea;The second group contains 18 resources,which are significantly characterized by higher water extract content,total catechins,high tea polyphenol content,and high phenol ammonia ratio,suitable for making both green tea and black tea.24 resources with high tea polyphenol content,6 resources with high caffeine content and 1 resource with high amino acid content were screened out.关键词
茶树/杂交/F1代/遗传多样性/生化成分/特异资源Key words
Tea plant/Hybrid/F1 generation/Genetic diversity/Biochemical components/Specific resources分类
农业科技引用本文复制引用
刘子涵,姚林,彭律文,段继华,谢念祠,于晶,陈宇宏,雷雨,周跃斌..不同茶树杂交F1代主要生化成分遗传多样性分析[J].茶叶通讯,2025,52(1):26-33,8.基金项目
长沙市自然科学基金(kq2402130),湖南省农业科技创新资金(2024CX23) （kq2402130）
