Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (7): 1550-1563.DOI: 10.3969/j.issn.1004-1524.20230261

• Crop Science • Previous Articles     Next Articles

Genome-wide association analysis of stomatal characters of cultivated local tea plants in Guizhou, China

BAI Dingchen1(), ZHAO Zhifei2, GONG Xue3, LIU Yuan3, NIU Suzhen1,4,*(), CHEN Zhengwu5   

  1. 1. College of Tea, Guizhou University, Guiyang 550025, China
    2. College of Cultural Tourism and Regional Development, Guiyang College of Humanities and Technology, Guiyang 550025, China
    3. Guiyang Agricultural Technology Extension Station, Guiyang 550081,China
    4. Institute of Agricultural Bioengineering, Guizhou University, Guiyang 550025, China
    5. Tea Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550025, China
  • Received:2023-03-03 Online:2023-07-25 Published:2023-08-17
  • Contact: NIU Suzhen

Abstract:

In order to provide a basis for the development and utilization of cultivated local tea trees in Guizhou. Through Genome-Wide Association Study (GWAS) on the stomatal traits of cultivated local tea trees in Guizhou, the genes related to stomatal development were identified.This study utilized Simplified Genotyping-by-Sequencing (GBS) technology to conduct GWAS analysis on 253 cultivated local tea tree germplasm resources in Guizhou. The results showed that a total of 45 SNP loci were associated with 5 stomatal phenotypic traits, and a total of 20 genes were detected within the 45 SNPS loci range of 50 kb downstream. Among them, 6 genes are related to stomatal length (SL), 1 gene is related to stomatal width (SW), 7 genes are related to stomatal area (SA), 2 genes are related to stomatal density (SD), and 4 genes are related to stomatal perimeter (SP). This research achievement is beneficial for the development and utilization of cultivated tea tree resources with complex genetic backgrounds and rich ecological types, and for screening excellent tea tree varieties with strong adaptability and promoting the adjustment of the tea industry variety structure in Guizhou.

Key words: germplasm resources, cultivated tea tree, genome-wide association analysis

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