Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (2): 298-307.DOI: 10.3969/j.issn.1004-1524.2021.02.13

• Horticultural Science • Previous Articles     Next Articles

Phenotypic variation and resource value evaluation of natural hybrid progenies of seventeen Huangjinju tea plants

WANG Zhihui1,2(), PENG Hua1,2, YANG Puxiang1,2,*(), JIANG Xinfeng1,2, LI Wenjin1,2, YUE Cuinan1,2, LI Chen, LI Yansheng1,2   

  1. 1. Jiangxi Sericulture and Tea Research Institute/Key Laboratory of Tea Quality and Safety Control in Jiangxi Province, Nanchang 330202, China
    2. Jiangxi Economic Crop Research Institute, Nanchang 330202, China
  • Received:2020-08-26 Online:2021-02-25 Published:2021-02-25
  • Contact: YANG Puxiang

Abstract:

The phenotypic characters of natural hybrids of yellow tea variety Huangjinju are different, in order to explore the phenotypic variation and diversity of them, excellent individual plants were screened. The variation and diversity of 23 phenotypic traits of 17 individuals from natural hybrid progenies were analyzed, and excellent phenotypic plants were screened, and the biochemical quality was evaluated by principal component analysis. The results showed that the variation coefficient of descriptive characters of natural hybrids ranged from 0 to 57.23%, with an average value of 33.88%. The diversity index ranged from 0 to 1.78, with an average of 0.81; Among them, there were no variation in tree type and tree posture, and the color variation of bud and leaf was the largest; The variation coefficient of quantitative traits ranged from 10.33% to 19.82%, with an average of 14.68%. The diversity index ranged from 1.14 to 1.95, with an average of 1.75. The contents of free amino acids and simple catechins of some individual plants were significantly increased by natural hybridization, while the contents of tea polyphenols, total catechins and ester catechins were significantly decreased. There was no significant difference in caffeine among the excellent phenotypic plants (P>0.05). Finally, five plants with better phenotypic and biochemical quality were selected by principal component analysis, the buds of HJJ-12 and HJJ-1 were green, those of HJJ-7 and HJJ-11 were yellow, and that of HJJ-17 was purple.

Key words: tea plant, Huangjinju, hybrid offspring, phenotype, coefficient of variation, diversity index

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