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      Morfologia polínica de espécies das tribos Ipomoeeae Hallier f. e Merremieae D.F. Austin (Convolvulaceae) ocorrentes numa região de ecótono do município de Caetité, BA, Brasil Translated title: Pollen morphology of species from tribes Ipomoeeae Hallier f. and Merremieae D.F. Austin, Convolvulaceae, occurring in an ecotonal region of the municipality of Caetité, Bahia State, Brazil

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          Abstract

          RESUMO O estudo da morfologia polínica das espécies das tribos Ipomoeeae e Merremieae (Convolvulaceae) tem como finalidade contribuir com a ampliação do conhecimento palinológico dos táxons estudados e subsidiar a taxonomia do grupo. Foram examinados os grãos de pólen de 10 espécies de Ipomoea, uma de Turbina (tribo Ipomoeeae) e quatro de Merremia (tribo Merremieae) ocorrentes na flora de Brejinho das Ametistas, Caetité, BA, Brasil. Os grãos de pólen foram acetolisados, mensurados, descritos e ilustrados sob microscopia de luz (ML) e eletrônica de varredura (MEV). Mediante a análise da morfologia polínica dos táxons estudados, foi possível confirmar o caráter euripolínico do grupo e reconhecer dois tipos polínicos com base no tipo apertural e na ornamentação da exina: Tipo 1. grãos de pólen pantoporados, equinados; Tipo 2. grãos de pólen 3-6-colpados, microequinados, granulados.

          Translated abstract

          ABSTRACT This pollen morphology study of species of the tribes Ipomoeeae and Merremieae (Convolvulaceae) aims to contribute to the knowledge of palynology of the taxa studied and to the taxonomy of the group. Ten species of Ipomoea, one of Turbina (Ipomoeeae tribe), and four species of Merremia (Merremieae tribe) occurring in the flora of the Brejinho das Ametistas, Caetité, Bahia State, Brazil were examined. The pollen grains were acetolysed, measured, described, and illustrated under light microscopy (LM) and scanning electron (SEM) microscopy. By analyzing the pollen morphology of the taxa studied, it was possible to confirm the euripollinic character of the group and to recognize two pollen types based upon the apertural type and the exine ornamentation: 1) pantoporate, echinate pollen grain; 2) 3-6-colpate, microechinate, granulate pollen grain.

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            The acetolysis method. A revised description

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              Pollen morphology and plant taxonomy (Angiosperms)

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                hoehnea
                Hoehnea
                Hoehnea
                Instituto de Botânica (São Paulo )
                2236-8906
                June 2015
                : 42
                : 2
                : 253-264
                Affiliations
                [1 ] Universidade Estadual de Feira de Santana Brazil
                [2 ] Universidade do Estado da Bahia Brazil
                [3 ] Universidade do Estado da Bahia Brazil
                [4 ] Instituto de Botânica Brazil
                Article
                S2236-89062015000200253
                10.1590/2236-8906-37/2014
                894e252f-7f9e-418f-9908-009f49ee91d1

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=2236-8906&lng=en
                Categories
                PLANT SCIENCES

                Plant science & Botany
                grãos de pólen,morfologia,Palinologia,Convolvulaceae,morphology,Palynology,pollen grains

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