植物遗传资源学报2026，Vol.27Issue(2)：387-397,11.DOI:10.13430/j.cnki.jpgr.20250917001
旺苍茶树资源遗传多样性分析与基因资源挖掘
Genetic Diversity Analysis and Gene Resource Exploration of Tea Germplasm Resources in Wangcang
摘要
Abstract
To clarify the genetic diversity of tea plant germplasm resources in Wangcang county,Sichuan province,and identify potential superior germplasms for new cultivar breeding,this study utilized a self-developed liquid-phase functional chip for tea plant to genotype 76252 SNP loci in 136 accessions.Combined with biochemical component detection and organoleptic evaluation,the genetic structure and quality characteristics of these local germplasms were comprehensively analyzed.Genome-wide association studies were further conducted to identify SNP loci and candidate genes significantly associated with quality traits.The results show that the tea plant germplasm resources in Wangcang county exhibit rich diversity and distinct regional characteristics.Among them,the ancient tea plant population from Daliang town is identified as a transitional type,rich in esterified catechins—especially epigallocatechin gallate.And the baked green tea produced from these plants demonstrates excellent quality,with a generally refreshing and high-aromatic profile featuring floral(or fruity)notes,and a taste characterized by sweetness,mellowness,and freshness.Based on 40326 core SNP loci detected,four candidate genes(γ-CA1,TPR5,MYB94,and UGT85A1)significantly correlated with the content of amino acids,tea polyphenols,and epigallocatechin gallate were identified.These results provide a theoretical foundation for the future development and utilization of tea plant germplasm resources in Wangcang.关键词
旺苍/40K茶树液相芯片/理化成分/感官审评/全基因组关联分析Key words
Wangcang/40K tea liquid-phase chip/biochemical component/organoleptic evaluation/genome-wide association study引用本文复制引用
王波,郑梦霞,贾丙娟,向云攀,梅飘,陈九江,任勇,马春雷,郝心愿,石保旭..旺苍茶树资源遗传多样性分析与基因资源挖掘[J].植物遗传资源学报,2026,27(2):387-397,11.基金项目
四川省区域创新合作项目(2025YFHZ0331) （2025YFHZ0331）
国家农业产业技术体系(CARS-19-02B)Sichuan Provincial Regional Innovation Cooperation Project(2025YFHZ0331) （CARS-19-02B）
China Agriculture Research System of MOF and MARA(CARS-19-02B) （CARS-19-02B）
