Screening Germplasm Resources of Tea Plant with Less Bitterness and Astringency Index  

作　　者：L. Y. Wu J. K. Lin 

机构地区：[1]Department of Tea Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China

出　　处：《Journal of Agricultural Science and Technology(B)》2011年第6期874-880,共7页农业科学与技术（B）

基　　金：This research was supported by Natural Science Foundation of Fujian （No. 2009J01063）. Determination of catechins was finished in Tea Research Institute, Chinese Academy of Agricultural Sciences and in Tea Quality Supervision and Inspection Center, Ministry of Agriculture.

摘　　要：The aim of this study was to identify tea varieties with less bitterness and astringency index that could be used as important sources for breeding and in the production of high quality tea. We studied 36 cultivars or lines which had been preserved in Tea Germplasm Garden of Fujian. The contents of catechins in spring tea shoots, summer tea shoots and autumn tea shoots in 36 varieties and lines were analyzed by HPLC. Analysis of these tea varieties and lines revealed that the catechins contained in the tea shoots in different seasons are highly variable. The content of ester-catechins in spring and summer tea shoots was higher than that of autumn, while non-ester-catechins did not showed the same characteristic. The content of EGCG showed an extremely significant positive correlation with T1 （T1 = EGC ＋ EGCG ＋ GCG ＋ EGC）, an extremely significant negative correlation with DL-C, the content of EGC showed the same characteristic. Among them, 10 cultivars with less bitterness and astringency index （the annual average bitterness and astringency index 〈 8.0） were considered good candidates as important breeding materials tbr tea infusion quality improvement.

关 键 词：Camellia sinensis ester-catechins BITTERNESS ASTRINGENCY germplasm resources screening. 

分 类 号：S571.1[农业科学—茶叶生产加工] TS272.51[农业科学—作物学]