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Comparative pollen morphological analysis in the subgenera Passiflora and Decaloba

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Title
Comparative pollen morphological analysis in the subgenera Passiflora and Decaloba
Published in
Anais da Academia Brasileira de Ciências, August 2018
DOI 10.1590/0001-3765201720170248
Pubmed ID
Authors

TALIANE L. SOARES, ONILDO N. JESUS, EVERTON H. SOUZA, MÔNICA L. ROSSI, EDER J. OLIVEIRA

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.

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The data shown below were compiled from readership statistics for 24 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 24 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 5 21%
Researcher 5 21%
Student > Ph. D. Student 4 17%
Other 3 13%
Student > Bachelor 2 8%
Other 2 8%
Unknown 3 13%
Readers by discipline Count As %
Agricultural and Biological Sciences 14 58%
Medicine and Dentistry 2 8%
Biochemistry, Genetics and Molecular Biology 1 4%
Physics and Astronomy 1 4%
Computer Science 1 4%
Other 2 8%
Unknown 3 13%