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Acta Horticulturae Sinica ›› 2024, Vol. 51 ›› Issue (2): 229-238.doi: 10.16420/j.issn.0513-353x.2023-0694

• Genetic & Breeding · Germplasm Resources · Molecular Biology • Previous Articles     Next Articles

Genome-wide Association Studies of Drought Tolerance in Tomato

DONG Shuchao1,2,HONG Jun3,LING Jiayi1,4,XIE Zixin1,5,ZHANG Shengjun6,ZHAO Liping1,2,SONG Liuxia1,2,WANG Yinlei1,2,and ZHAO Tongmin1,2,*   

  1. 1Institute of Vegetable Crop,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;2Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement,Nanjing 210014,China;3Center for Desert Agriculture,King Abdullah University of Science and Technology,Jeddah 23955,Saudi Arabia;4College of Horticulture and Plant Protection,Yangzhou University,Yangzhou,Jiangsu 225100,China;5College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China;6Institute of Agricultural Sciences of Ili Kazakh Autonomous Prefecture,Yining,Xinjiang 835000,China
  • Online:2024-02-25 Published:2024-02-26

Abstract: To conduct genome-wide association studies(GWAS)of drought tolerance,the relative water loss of detached leaves was analyzed after 24 h dehydration in 301 tomato(Solanum lycopersicum L.)accessions. A total number of three SNP sites(S02.1158758,S02.1160893,and S05.1426646)significantly associated with the drought tolerance of tomato accessions were identified by GWAS. Each single locus could explain 4.08%–18.97% of the phenotypic variation. Taken together,three SNP sites and seven candidate genes significantly associated with drought tolerance in tomato were identified in this study,which will help unravel the genetic and regulatory mechanisms of tomato drought tolerance,as well as establish a foundation for the genetic improvement of tomato stress tolerance.

Key words: tomato, drought tolerance, genome-wide association studies, candidate gene

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