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<p>The current study analyzed 40 diverse pomegranate genotypes representing indigenous (25) and exotic (15) cultivars with 16 highly informative DNA markers i.e. hypervariable SSRs (8), microRNA-SSRs (4) and InDel (4). The analysis revealed 48 alleles (Na) with an average of three alleles per marker. A moderate level of genetic diversity in the selected panel was evident from various marker parameters such as major allelic frequency (MAF), observed heterozygosity (<i>Ho</i>), polymorphic information content (PIC) and Shannon’s Information Index (I), with mean values of 0.53, 0.18, 0.57 and 0.93, respectively. Population structure analysis divided the entire panel into two subpopulations with intermixing of few exotic and indigenous varieties, implying towards non-geographical basis of grouping. The results of cluster analysis and principal coordinate analysis remained in agreement with each other. AMOVA explained only 2% variation among and 28% within populations supported the presence of low genetic differentiation (FST = 0.02) among pomegranate varieties. Our study revealed low genetic diversity in pomegranate, with most variation occurring within populations, indicating a shared lineage between exotic and indigenous cultivars. While this limits the scope for broad genetic improvement, existing variability may still support the selection of suitable parental combinations for breeding.</p>

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Investigating molecular diversity of exotic accessions and indigenous varieties of pomegranate

  • 期刊论文

  • 发表日期：

    2026年5月18日

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  • Deepali S. Kulkarni,
  • Prakash G. Patil,
  • Rucha Sarwale,
  • Shilpa Parashuram,
  • Abhishek Bohra,
  • K. Dhinesh Babu,
  • R. A. Marathe

摘要

The current study analyzed 40 diverse pomegranate genotypes representing indigenous (25) and exotic (15) cultivars with 16 highly informative DNA markers i.e. hypervariable SSRs (8), microRNA-SSRs (4) and InDel (4). The analysis revealed 48 alleles (Na) with an average of three alleles per marker. A moderate level of genetic diversity in the selected panel was evident from various marker parameters such as major allelic frequency (MAF), observed heterozygosity (Ho), polymorphic information content (PIC) and Shannon’s Information Index (I), with mean values of 0.53, 0.18, 0.57 and 0.93, respectively. Population structure analysis divided the entire panel into two subpopulations with intermixing of few exotic and indigenous varieties, implying towards non-geographical basis of grouping. The results of cluster analysis and principal coordinate analysis remained in agreement with each other. AMOVA explained only 2% variation among and 28% within populations supported the presence of low genetic differentiation (FST = 0.02) among pomegranate varieties. Our study revealed low genetic diversity in pomegranate, with most variation occurring within populations, indicating a shared lineage between exotic and indigenous cultivars. While this limits the scope for broad genetic improvement, existing variability may still support the selection of suitable parental combinations for breeding.