Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato)
We analyzed the pollen grains of 11 species within the subfamily Bombacoideae. The pollen grains were acetolyzed, after which they were analyzed and photographed under light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed under scanning electron microscopy. We studied pollen characters such as shape, size, exine ornamentation and aperture type. The species were separated by a pollen key, which considers the presence or absence of "calotte" in the pollen grains. This attribute separated Ceiba and Eriotheca from the other genera. Some species are differentiated by specific characters: in Bombacopsis glabra and B. stenopetala, the sexine is rugulate or "vermiculate" with isolated pilate elements; in B. calophylla, the pollen grains are sinu-aperturate; Ceiba speciosa show atypical, duplicolumellate sexine; C. erianthos is the only species with 5-colporate pollen grains and a pentagonal amb; in Pachira aquatica the reticulum has muri with spiculaspinulose muri ("reticulum cristate"). The variation in the pollen morphology confirms the eurypalynous status of the genera studied here.
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Sociedade Botânica do Brasil
2014
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oai:scielo:S0102-330620140003000072014-10-06Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato)Abreu,Vanessa Holanda Righetti deMendonça,Claudia Barbieri FerreiraGonçalves-Esteves,Vania Atlantic Forest Bombacoideae palynology Rio de Janeiro We analyzed the pollen grains of 11 species within the subfamily Bombacoideae. The pollen grains were acetolyzed, after which they were analyzed and photographed under light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed under scanning electron microscopy. We studied pollen characters such as shape, size, exine ornamentation and aperture type. The species were separated by a pollen key, which considers the presence or absence of "calotte" in the pollen grains. This attribute separated Ceiba and Eriotheca from the other genera. Some species are differentiated by specific characters: in Bombacopsis glabra and B. stenopetala, the sexine is rugulate or "vermiculate" with isolated pilate elements; in B. calophylla, the pollen grains are sinu-aperturate; Ceiba speciosa show atypical, duplicolumellate sexine; C. erianthos is the only species with 5-colporate pollen grains and a pentagonal amb; in Pachira aquatica the reticulum has muri with spiculaspinulose muri ("reticulum cristate"). The variation in the pollen morphology confirms the eurypalynous status of the genera studied here.info:eu-repo/semantics/openAccessSociedade Botânica do BrasilActa Botanica Brasilica v.28 n.3 20142014-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300007en10.1590/0102-33062014abb3482 |
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Abreu,Vanessa Holanda Righetti de Mendonça,Claudia Barbieri Ferreira Gonçalves-Esteves,Vania |
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Abreu,Vanessa Holanda Righetti de Mendonça,Claudia Barbieri Ferreira Gonçalves-Esteves,Vania Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato) |
author_facet |
Abreu,Vanessa Holanda Righetti de Mendonça,Claudia Barbieri Ferreira Gonçalves-Esteves,Vania |
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Abreu,Vanessa Holanda Righetti de |
title |
Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato) |
title_short |
Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato) |
title_full |
Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato) |
title_fullStr |
Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato) |
title_full_unstemmed |
Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato) |
title_sort |
pollen morphology of selected species of the subfamily bombacoideae (malvaceae sensu lato) |
description |
We analyzed the pollen grains of 11 species within the subfamily Bombacoideae. The pollen grains were acetolyzed, after which they were analyzed and photographed under light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed under scanning electron microscopy. We studied pollen characters such as shape, size, exine ornamentation and aperture type. The species were separated by a pollen key, which considers the presence or absence of "calotte" in the pollen grains. This attribute separated Ceiba and Eriotheca from the other genera. Some species are differentiated by specific characters: in Bombacopsis glabra and B. stenopetala, the sexine is rugulate or "vermiculate" with isolated pilate elements; in B. calophylla, the pollen grains are sinu-aperturate; Ceiba speciosa show atypical, duplicolumellate sexine; C. erianthos is the only species with 5-colporate pollen grains and a pentagonal amb; in Pachira aquatica the reticulum has muri with spiculaspinulose muri ("reticulum cristate"). The variation in the pollen morphology confirms the eurypalynous status of the genera studied here. |
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Sociedade Botânica do Brasil |
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2014 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300007 |
work_keys_str_mv |
AT abreuvanessaholandarighettide pollenmorphologyofselectedspeciesofthesubfamilybombacoideaemalvaceaesensulato AT mendoncaclaudiabarbieriferreira pollenmorphologyofselectedspeciesofthesubfamilybombacoideaemalvaceaesensulato AT goncalvesestevesvania pollenmorphologyofselectedspeciesofthesubfamilybombacoideaemalvaceaesensulato |
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