ArticleMolecular biology reports2026
Genetic diversity and population structure of Passiflora spp. using inter-primer binding site (iPBS) - retrotransposon markers.
Article in Molecular biology reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe Passiflora genus presents a representative variability of passion fruit species with food, pharmacological and ornamental potential. To understand this genetic variability, it is essential that genetic resources are well characterized for future use in breeding and conservation programs. The aim of this study was to investigate for the first time the diversity genetic and structure population of 88 Passiflora genotypes with the use of inter-primer binding site (iPBS) markers. METHODS AND
resultsGenotypes were grouped through Unweighted Pair-Group Mean Average (UPGMA). The population structure analysis was carried out by two methods using model-based Structure analysis and cluster-based discriminant analysis of principal components (DAPC). Samples of 88 genotypes were analyzed using 24 iPBS markers, of which 19 of them generated 234 informative bands, with an average of 12.32 per locus, ranging from 5 to 18 alleles. Polymorphic information content (PIC) values varied between 0.14 and 0.43, with an average value of 0.28. Nei's genetic diversity (He) as 0.28 and Shannon's information index (I) as 0.43. The genetic dissimarity for the 88 Passiflora genotypes ranged from 0.11 to 0.97, with mean values of 0.74, indicating substantial genetic diversity. Molecular variance analysis (AMOVA) indicated that within group variations contributed more (51%) to the genetic diversity than among group variations (49%), with percetage of the genetic differentiation coefficient (F
conclusionsThe results of this study provide valuable information for passion fruit germplasm management and contribute to the improvement of current breeding strategies. They also demonstrated the effectiveness of iPBS retrotransposon markers in detecting genetic differentiation and reliably elucidating genetic relationships among passion fruit genotypes, thereby supporting breeding programs and germplasm conservation efforts.
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