Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Botanica Brasilica |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100138 |
Resumo: | This paper presents the results of a palynological study of the species ofGraphistylis that were segregated fromSenecio (s.l.) (Seneciosect. Dichroa) and that are all endemic of Brazil. These species are found in mountainous regions of the states of Espirito Santo, Minas Gerais, Paraná, Rio de Janeiro, São Paulo and Santa Catarina. The pollen grains of eight species were acetolyzed and analyzed and photographed using light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed using scanning electron microscopy. The current study undertook a palynologically analysis of Graphistylis in order to obtain information useful for making a better ranking of these genus. The results show medium-sized pollen grains that were oblate spheroidal or prolate spheroidal and subtriangular amb and tricolporate. The pollen grains possessed lalongate endoapertures with a median constriction and the presence of costa in only two species. The exine is echinate with a varying number of spines in the apocolpium region around the central spine in polar view. The spines are short with basal perforations at varying distances. Although the morphology of the pollen of species ofGraphistylis is very similar, multivariate analysis highlights the importance of quantitative traits in distinguishing species. |
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Acta Botanica Brasilica |
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Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazilcluster analysisordination analysispalynologypollen grainsSenecioneaeThis paper presents the results of a palynological study of the species ofGraphistylis that were segregated fromSenecio (s.l.) (Seneciosect. Dichroa) and that are all endemic of Brazil. These species are found in mountainous regions of the states of Espirito Santo, Minas Gerais, Paraná, Rio de Janeiro, São Paulo and Santa Catarina. The pollen grains of eight species were acetolyzed and analyzed and photographed using light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed using scanning electron microscopy. The current study undertook a palynologically analysis of Graphistylis in order to obtain information useful for making a better ranking of these genus. The results show medium-sized pollen grains that were oblate spheroidal or prolate spheroidal and subtriangular amb and tricolporate. The pollen grains possessed lalongate endoapertures with a median constriction and the presence of costa in only two species. The exine is echinate with a varying number of spines in the apocolpium region around the central spine in polar view. The spines are short with basal perforations at varying distances. Although the morphology of the pollen of species ofGraphistylis is very similar, multivariate analysis highlights the importance of quantitative traits in distinguishing species.Sociedade Botânica do Brasil2016-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100138Acta Botanica Brasilica v.30 n.1 2016reponame:Acta Botanica Brasilicainstname:Sociedade Botânica do Brasil (SBB)instacron:SBB10.1590/0102-33062015abb0300info:eu-repo/semantics/openAccessSouza,Mariana Albuquerque deMendonça,Claudia Barbieri FerreiraEsteves,Roberto LourençoGonçalves-Esteves,Vaniaeng2016-02-05T00:00:00Zoai:scielo:S0102-33062016000100138Revistahttps://www.scielo.br/j/abb/ONGhttps://old.scielo.br/oai/scielo-oai.phpacta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com1677-941X0102-3306opendoar:2016-02-05T00:00Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB)false |
dc.title.none.fl_str_mv |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil |
title |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil |
spellingShingle |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil Souza,Mariana Albuquerque de cluster analysis ordination analysis palynology pollen grains Senecioneae |
title_short |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil |
title_full |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil |
title_fullStr |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil |
title_full_unstemmed |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil |
title_sort |
Pollen morphology of species of Graphistylis B. Nord. (Asteraceae) of Brazil |
author |
Souza,Mariana Albuquerque de |
author_facet |
Souza,Mariana Albuquerque de Mendonça,Claudia Barbieri Ferreira Esteves,Roberto Lourenço Gonçalves-Esteves,Vania |
author_role |
author |
author2 |
Mendonça,Claudia Barbieri Ferreira Esteves,Roberto Lourenço Gonçalves-Esteves,Vania |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Souza,Mariana Albuquerque de Mendonça,Claudia Barbieri Ferreira Esteves,Roberto Lourenço Gonçalves-Esteves,Vania |
dc.subject.por.fl_str_mv |
cluster analysis ordination analysis palynology pollen grains Senecioneae |
topic |
cluster analysis ordination analysis palynology pollen grains Senecioneae |
description |
This paper presents the results of a palynological study of the species ofGraphistylis that were segregated fromSenecio (s.l.) (Seneciosect. Dichroa) and that are all endemic of Brazil. These species are found in mountainous regions of the states of Espirito Santo, Minas Gerais, Paraná, Rio de Janeiro, São Paulo and Santa Catarina. The pollen grains of eight species were acetolyzed and analyzed and photographed using light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed using scanning electron microscopy. The current study undertook a palynologically analysis of Graphistylis in order to obtain information useful for making a better ranking of these genus. The results show medium-sized pollen grains that were oblate spheroidal or prolate spheroidal and subtriangular amb and tricolporate. The pollen grains possessed lalongate endoapertures with a median constriction and the presence of costa in only two species. The exine is echinate with a varying number of spines in the apocolpium region around the central spine in polar view. The spines are short with basal perforations at varying distances. Although the morphology of the pollen of species ofGraphistylis is very similar, multivariate analysis highlights the importance of quantitative traits in distinguishing species. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100138 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100138 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0102-33062015abb0300 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
dc.source.none.fl_str_mv |
Acta Botanica Brasilica v.30 n.1 2016 reponame:Acta Botanica Brasilica instname:Sociedade Botânica do Brasil (SBB) instacron:SBB |
instname_str |
Sociedade Botânica do Brasil (SBB) |
instacron_str |
SBB |
institution |
SBB |
reponame_str |
Acta Botanica Brasilica |
collection |
Acta Botanica Brasilica |
repository.name.fl_str_mv |
Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB) |
repository.mail.fl_str_mv |
acta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com |
_version_ |
1752126661687508992 |