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<p><i>Gleditsia sinensis</i> Lam., a valuable medicinal and agroforestry species, was genetically characterized using SLAF-Seq to support conservation and breeding programs. Analysis of 159 accessions from Guizhou Province identified 132,709 high-quality SNPs (ranging from 27,292 to 76,870 per individual), revealing five distinct genetic groups (Fst = 0.026–0.07). The high-elevation Q5 population (1200–1900&#xa0;m) exhibited exceptional nucleotide diversity (Pi = 0.0285) and adaptive signatures (Tajima’s D = 0.359), underscoring its significance as a genetic reservoir for conservation efforts. In contrast, lowland populations displayed traits that are better suited to warmer climates.These findings facilitate: (1) The prioritization of the Q5 population for in situ conservation due to its high diversity and local adaptation; (2) Utilizing the genetic divergence among groups, controlled crosses (e.g., Q2 × Q5) could be deployed to exploit heterosis.; (3) Future trait-marker association research aimed at developing improved medicinal and stress-resistant cultivars.The SNP dataset serves as a robust resource for transitioning from phenotypic selection to molecular-assisted breeding, thereby enhancing germplasm management and cultivar development. This study effectively bridges population genetics with practical applications, providing a genomic foundation for the sustainable utilization of this economically important species.</p>

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Analysis of genetic diversity and population structure of Gleditsia sinensis based on SLAF-Seq

  • 期刊论文

  • 发表日期：

    2025年12月9日

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  • Bing Yang,
  • Jun Luo,
  • Xiaoyong Dai,
  • Yayan Zhu

摘要

Gleditsia sinensis Lam., a valuable medicinal and agroforestry species, was genetically characterized using SLAF-Seq to support conservation and breeding programs. Analysis of 159 accessions from Guizhou Province identified 132,709 high-quality SNPs (ranging from 27,292 to 76,870 per individual), revealing five distinct genetic groups (Fst = 0.026–0.07). The high-elevation Q5 population (1200–1900 m) exhibited exceptional nucleotide diversity (Pi = 0.0285) and adaptive signatures (Tajima’s D = 0.359), underscoring its significance as a genetic reservoir for conservation efforts. In contrast, lowland populations displayed traits that are better suited to warmer climates.These findings facilitate: (1) The prioritization of the Q5 population for in situ conservation due to its high diversity and local adaptation; (2) Utilizing the genetic divergence among groups, controlled crosses (e.g., Q2 × Q5) could be deployed to exploit heterosis.; (3) Future trait-marker association research aimed at developing improved medicinal and stress-resistant cultivars.The SNP dataset serves as a robust resource for transitioning from phenotypic selection to molecular-assisted breeding, thereby enhancing germplasm management and cultivar development. This study effectively bridges population genetics with practical applications, providing a genomic foundation for the sustainable utilization of this economically important species.