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<p><i>Lablab purpureus</i> (L.) Sweet, a versatile yet underutilized legume, holds significant agronomic and nutritional potential across various agro-climatic regions, particularly in Assam, India. Despite the widespread cultivation of traditional genotypes, limited information is available on their genetic diversity and phylogenetic relationships. This study aimed to assess the agro-morphological diversity and molecular phylogeny of 16 indigenous <i>L. purpureus</i> (L.) Sweet genotypes collected from diverse agro-climatic zones of Assam. Morphological characterization, based on standard descriptors, revealed distinct clustering of genotypes into two major groups: Cluster I (4 genotypes) and Cluster II (12 genotypes). Molecular analysis using nuclear (ITS2) and chloroplast (trnL, rbcL, and matK) markers indicated high nucleotide and haplotype diversity, with evidence of selection sweeps influencing genetic variation. Phylogenetic trees based on individual loci revealed clustering patterns that varied across markers, while multigene analysis provided more robust phylogenetic resolution, correlating with certain morphological traits, particularly pod shape and dimensions. The observed diversity underscores the importance of conserving and utilizing these traditional genotypes for crop improvement and sustainable agricultural development.</p>

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Integrative analysis of agro-morphological traits and phylogeny in indigenous Lablab purpureus (L.) Sweet genotypes from Assam, India

  • 期刊论文

  • 发表日期：

    2025年12月11日

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  • Werina Ingtipi,
  • Preetom Regon,
  • Bhaben Tanti,
  • Jinu Devi Rajkumari

摘要

Lablab purpureus (L.) Sweet, a versatile yet underutilized legume, holds significant agronomic and nutritional potential across various agro-climatic regions, particularly in Assam, India. Despite the widespread cultivation of traditional genotypes, limited information is available on their genetic diversity and phylogenetic relationships. This study aimed to assess the agro-morphological diversity and molecular phylogeny of 16 indigenous L. purpureus (L.) Sweet genotypes collected from diverse agro-climatic zones of Assam. Morphological characterization, based on standard descriptors, revealed distinct clustering of genotypes into two major groups: Cluster I (4 genotypes) and Cluster II (12 genotypes). Molecular analysis using nuclear (ITS2) and chloroplast (trnL, rbcL, and matK) markers indicated high nucleotide and haplotype diversity, with evidence of selection sweeps influencing genetic variation. Phylogenetic trees based on individual loci revealed clustering patterns that varied across markers, while multigene analysis provided more robust phylogenetic resolution, correlating with certain morphological traits, particularly pod shape and dimensions. The observed diversity underscores the importance of conserving and utilizing these traditional genotypes for crop improvement and sustainable agricultural development.