Molecular genetic variability studies are essential to complement the agronomic characterization of yellow passion fruit genotypes (Passiflora edulis Sims). Therefore, this study aimed at evaluating the genetic diversity of 24 genotypes of yellow passion fruit obtained from a research program developed by the University of Brasilia and Embrapa Cerrados, using RAPD molecular markers. RAPD markers were obtained from eight decamer primers and converted into a matrix of binary data, from which genetic dissimilarities among genotypes were estimated, and clustering analysis was performed. A total of 54 RAPD markers were obtained, with 6.8 bands per primer on average. From this total, 46 (85.2%) RAPD markers were polymorphic. The OPD10 primer presented the highest number of polymorphic bands. The high percentage of polymorphic markers evidenced the existence of genetic variability among genotypes. Nei’s genetic distance between genotypes ranged from 0.043 to 0.451. Clustering resulted in the formation of at least five groups of similarity.
SummaryPhysical analyses and an analysis of the mineral content were carried out by peroxide-perchloric wet-digestion, taking readings using inductively coupled plasma-atomic emission spectrometry (ICP-AES) and measurements using an analytical balance and digital paquimeter, of three commercial hybrids of Passiflora edulis f. flavicarpa Deg.: BRS Sol do Cerrado, BRS Ouro Vermelho and BRS Gigante Amarelo, cultivated and harvested from the experimental area of Embrapa Cerrados, Planaltina, DF, Brazil, in October/2007. Eighteen fruits were evaluated for each hybrid, and presented weights and dimensions superior to those found in the scientific literature, without significant differences between the hybrids. Sol do Cerrado showed less weight loss post storage when compared to the other hybrids, but no significant differences were found with respect to the other physical parameters studied. The mineral contents found in the hybrids were higher than the values found in the scientific literature and in the Brazilian food composition tables (TACO) elaborated by NEPA-UNICAMP. The Sol do Cerrado had a higher iron content than the other hybrids. The hybrids are excellent sources of minerals, especially in comparison with the frozen pulp sold in supermarkets. Key words: Passiflora edulis; Physicochemical properties; Elemental composition; Health; Functional foods. ResumoAnálises físicas e de conteúdo mineral foram executadas por meio de digestão peróxido/perclórica com leitura em ICP-AES, e medições, com auxílio de balança analítica digital e paquímetro digital, de três híbridos comerciais de Passiflora edulis f. flavicarpa Deg. -BRS Sol do Cerrado, BRS Ouro Vermelho e BRS Gigante Amarelo -, cultivados na área experimental da Embrapa Cerrados, Planaltina-DF, no período de outubro de 2007. Dezoito frutos de cada híbrido foram avaliados e apresentaram pesos e dimensões superiores àqueles encontrados na literatura científica, sem diferenças significativas entre os híbridos. Sol do Cerrado apresentou menor perda de peso após o armazenamento em relação aos demais híbridos. Não foram encontradas diferenças significativas em relação aos demais parâmetros físicos estudados. O conteúdo de minerais encontrados nos híbridos foi superior àqueles encontrados na literatura científica e na Tabela Brasileira de Composição de Alimentos (UNICAMP, 2006) elaborada pela NEPA-UNICAMP. Sol do Cerrado apresentou teores de ferro superiores aos demais híbridos, o que pode ser devido a diferenças na absorção desse elemento por parte do híbrido. Os híbridos mostraram-se excelentes fontes de minerais, especialmente em comparação com a polpa de maracujá-amarelo congelada de supermercado.
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