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August 14, 2026PlantsOpen Access

Comparative Cytogenetic Study of Eggplant (Solanum melongena L.) and Its Wild Ancestors Solanum insanum L. and Solanum incanum L.

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Authors

EFEgizia FalistoccoUniversity of PerugiaMCMarilena CeccarelliUniversity of Perugia

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Implication

Comparative cytogenetic study reveals conserved chromosome architecture and distinct ribosomal DNA patterns among eggplant and its wild relatives, highlighting evolutionary lineage relationships.

Key Points

  • Characterize chromosome morphology and repetitive DNA distribution to clarify the evolutionary relationships between cultivated eggplant and its wild relatives.
  • Conducted karyomorphological analyses on mitotic chromosome spreads (2n = 2x = 24) of Solanum melongena, Solanum insanum, and Solanum incanum.
  • Performed fluorescence in situ hybridization (FISH) with ribosomal DNA probes alongside genomic in situ hybridization (s-GISH and cross-GISH) to map satellite DNA repeats and assess genomic homology.
  • Chromosomal morphology and rDNA FISH mapping demonstrated shared structural patterns between S. melongena and S. insanum, whereas nucleolar organizer region (NOR)-bearing chromosomes distinguished S. incanum.
  • s-GISH and cross-GISH experiments identified identical satellite DNA repeat distributions and strong cross-hybridization signals across all three taxa, demonstrating conserved chromosome architecture and high genomic homology.

Cite This Study

Falistocco et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec746b70b84ec8b913765https://doi.org/10.3390/plants15162450
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