西南农业学报2025，Vol.38Issue(7)：1452-1459,8.DOI:10.16213/j.cnki.scjas.2025.7.010
49份茶树种质加工红茶的生化品质比较及特异种质筛选
Comparison of biochemical quality and screening of specific germplasm of black tea from 49 tea germplasms
摘要
Abstract
[Objective]The purpose of the paper is to screen tea tree resources with specific biochemical components,providing a strong theo-retical basis for the excavation and utilization of specific tea varieties and variety breeding.[Method]The contents of caffeine,catechins and tea pigment in 49 tea germplasms were determined,and their principal components and cluster analysis were carried out.[Result]The total a-mount of catechins and its main components including+C,EC,EGC,EGCG,ECG,caffeine and tea pigment(theaflavins,thearubigins and theabrownin)in 49 tea germplasms had rich genetic diversity and variability.Among them,the diversity index was between 0.52 and 1.65.In addition,EGC(267.61％)had the largest coefficient of variation,while caffeine(11.79％)had the smallest coefficient of variation.Ac-cording to principal component analysis,it indicated that the accumulative contribution rate of the first four principal components reached 84.48％,maintaining most of the information of all traits,which could be used for comprehensive evaluation of the tested tea germplasms.Based on 14 biochemical components,49 tea germplasms could be divided into 4 groups.The total content of catechins and its components,Catechin index value,theaflavins,thearubigins,caffeine and other main indicators were significantly different.In accordance with correlation analysis,there was a significant positive correlation between the five catechins,and there were significant and extremely significant positive correlations between CI and theabrownin and thearubigins.[Conclusion]Based on the comprehensive analysis,one high EGCG(＞10％)specific tea germplasm:Yunkang 10;Six high caffeine(＞4％)tea germplasm:Zaoshengheicha,Fengqing 3,Qingshui 1,Tanchun,Qingshui 2,Yunfeng;Two high CI(＞5)suitable black tea germplasm:Zaoshengheicha and Heishantouqunti.In addition,four high-quality tea tree resources for making black tea soup were also identified,namely Fengqing 3,Qingshui 3,Longjing 43 and Zijuan.关键词
茶树/种质资源/生化成分/主成分分析/儿茶素Key words
Tea plant/Germplasm/Biochemical component/Principal components anaylsis/Catechins分类
轻工纺织引用本文复制引用
魏春梅,安福全,苏奇倩,苏向宇,吴成远,于龙凤..49份茶树种质加工红茶的生化品质比较及特异种质筛选[J].西南农业学报,2025,38(7):1452-1459,8.基金项目
云南省科技人才和平台计划—云南省红茶工程技术研究中心(2018DH011) （2018DH011）
云南省科技人才和平台计划—院士(专家)工作站(202305AF150058) （专家）
云南省科技厅科技计划—地方高校联合专项(202001BA070001-187) （202001BA070001-187）
中央引导地方科技发展资金项目(202207AB110007) （202207AB110007）
