Abstract

MARIN TANGARIFE, Mónica María; CAETANO, Creuci María  and  POSADA TIQUE, César Augusto. Morphological characterization of Colombian Passiflora species. Acta Agron. [online]. 2009, vol.58, n.3, pp.117-125. ISSN 0120-2812.

21 Colombian Passiflora species, including three subgenera of the genus were morphologically characterized by using 66 quantitative and 100 qualitative descriptors. Principal components analysis of quantitative data identified two components with own value superior to one, associated respectivelly to leave and flower, which explained 80% of total variance of studied accessions. Factorial analysis of multiple correspondence permitted identify three dimensions, which explained 82% of total variance. Second dimension was associated with growth habit, number of flowers by knot and collor of the last filaments series in apex. Third dimension was associated with morphology and bracts margin, and the former whith others qualitative variables. Cluster analysis (city-block-Manhattan distances) could to evidence two mayor groups, according to flower tube size (the first one with species presenting a short flower tube, other presenting a large flower tube). Classification analysis also showed that flower morphology was very important to determine infrageneric discrimination in Passiflora.

Keywords : Passifloraceae; plant morphology; flower morphology.

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