Data/hora: 01/06/2024 04:52:01

Provedor de dados: | 42
País: | Brazil
Título: | Comparative pollen morphological analysis in the subgenera Passiflora and Decaloba
Autores: | SOARES,TALIANE L.; JESUS,ONILDO N.; SOUZA,EVERTON H.; ROSSI,MÔNICA L.; OLIVEIRA,EDER J.
Data: | 2018-08-01
Ano: | 2018
Palavras-chave: | Passifloraceae; Pollen grains; Scanning electron microscopy; Exine; Morphological characterization.
Resumo: | ABSTRACT The genus Passiflora is the most diversified of the Passifloraceae, and its palynology presents wide morphological variability. The objective of the study was to evaluate the pollen morphology of 18 Passiflora species in order to identify informative pollinic characteristics to contribute to the taxonomic classification of the genus. The morphology of the pollen grains and the exine structure were investigated using light microscopy and scanning electron microscopy. Differences in the pollen morphology were found in the studied species, mainly in terms of shape, pollen aperture and ornamentation pattern of the exine. Most of the species belonging to the subgenus Passiflora presented ornamented 6-syncolpate pollen grains with an oblate-spheroidal shape and an exine with large lumens. In the subgenus Decaloba the pollen grains were 6-colporate, 12-colpate and 12-colporate, with subprolate to prolate-spheroidal shape, as well as an exine with smaller lumen size and few ornamented. The pollen morphology of the species of the subgenera Passiflora and Decaloba has shown palynological characteristics that have specific diagnostic value, thus allowing a better understanding of the taxonomy of the genus Passiflora.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502381
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201720170248
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.90 n.2 suppl.1 2018
Fonte: | info:eu-repo/semantics/openAccess