Analysis and evaluation of the components and fatty acid composition of tea seeds from different cultivars
Received:May 08, 2025  Revised:April 07, 2026  Accepted:August 22, 2025   Published:July 20, 2026
DOI:10.19902/j.cnki.zgyz.1003-7969.250235
KeyWord:tea tree for seed production  economic traits  components of tea seeds  fatty acid composition
FundProject:金华市科技计划项目(2023-2-004);浙江省基础公益研究项目(LGN22C160010)
Author NameAffiliation
LI Duojiao1,2, JIANG Li1,2, SHEN Yingzi1,2 , YUAN Ming′an1,2 , HU Xinrong1,2, CHEN Bin1,2, ZHENG Zhaisheng1,2, LUO Wenwen3 1.Jinhua Academy of Agricultural Sciences, Jinhua 321000, Zhejiang, China
2.Jinhua Key Laboratory of Oil Crop Breeding and Oil Engineering, Jinhua 321000, Zhejiang, China
3.Jinhua Municipal Economic Special Products Extension Station, Jinhua 321000, Zhejiang, China 
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Abstract:
      In order to screen for unique resources among tea trees for seed production, a comparative analysis of the economic traits, quality characteristics, and fatty acid composition of tea seeds was conducted using 13 tea germplasm accessions with high seed-setting rates. Correlation analysis, cluster analysis, and principal component analysis were employed to comprehensively evaluate the traits of the tea seeds. The results indicated that differences existed among different tea tree cultivars in terms of single-plant yield of tea seeds, seed diameter, weight per 100 seeds, kernel-to-shell ratio, fat content, protein content, and starch content. A total of 20 fatty acids were detected in tea seed, with saturated fatty acid content ranging from 1209 g/kg to 33.63 g/kg, monounsaturated fatty acid content ranging from 56.70 g/kg to 138.08 g/kg, and polyunsaturated fatty acid content ranging from 13.09 g/kg to 57.17 g/kg. Correlation analysis indicated that there was a certain degree of correlation among the tea seed traits, and a highly significant correlation among the fatty acid contents. Hierarchical cluster analysis was used to classify 13 tea seed cultivars into three groups, the first group had high fatty acid content in seeds, the second group had large seeds but lower fatty acid content in seeds, and the third group had high protein content but lower fat content. Principal component analysis identified the top three cultivars based on comprehensive rankings as Jincha No. 1, Jincha 18, and Jinshuocha No. 1. In summary, the 13 tea plant germplasm accessions can be classified into three categories: high-oil, large-seed, and high-protein. Among them, Jincha No. 1, Jincha 18, and Jinshuocha No. 1 exhibit the best overall quality and can serve as an elite parent for tea tree breeding for seed production.
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