Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).

Detalhes bibliográficos
Autor(a) principal: CARTAXO-PINTO, S.
Data de Publicação: 2023
Outros Autores: VIEIRA, I. F. T., NASCIMENTO, J. M., BUENO, V. R., HEIDEN, G., MENDONÇA, C. B. F., GONÇALVES-ESTEVES, V.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1159128
https://doi.org/10.1080/01916122.2023.2242449
Resumo: Calea comprises 157 species that occur in the Neotropics. The genus is organized into eight subgenera and 18 sections. Calea sect. Meyeria consists of eight species occurring exclusively in south-central Brazil. In this study, pollen grains from these eight species were sampled from herborized flower buds in pre-anthesis. Pollen samples were acetolyzed, measured, and photographed under a light microscope. Unacetolyzed pollen grains were examined under a scanning electron microscope. The results were used to characterize pollen morphology and construct a palynotaxonomic key for Calea sect. Meyeria. The analyzed pollen grains were monads, isopolar, usually medium-sized, oblate spheroidal, tricolporate, with lalongate endoaperture, the sexine echinate and thicker than the nexine, and six spines in the apocolpium region. The eight species have very similar pollen grains, but some characters are informative for this section, namely pollen size, polar area, sexine ornamentation, and endoaperture characteristics. Despite the similarity of the pollen grains, palynological analysis was able to contribute to the delimitation of Calea species, providing new information for species distinction within Calea sect. Meyeria.
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spelling Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).CaleaPalynologyCalea comprises 157 species that occur in the Neotropics. The genus is organized into eight subgenera and 18 sections. Calea sect. Meyeria consists of eight species occurring exclusively in south-central Brazil. In this study, pollen grains from these eight species were sampled from herborized flower buds in pre-anthesis. Pollen samples were acetolyzed, measured, and photographed under a light microscope. Unacetolyzed pollen grains were examined under a scanning electron microscope. The results were used to characterize pollen morphology and construct a palynotaxonomic key for Calea sect. Meyeria. The analyzed pollen grains were monads, isopolar, usually medium-sized, oblate spheroidal, tricolporate, with lalongate endoaperture, the sexine echinate and thicker than the nexine, and six spines in the apocolpium region. The eight species have very similar pollen grains, but some characters are informative for this section, namely pollen size, polar area, sexine ornamentation, and endoaperture characteristics. Despite the similarity of the pollen grains, palynological analysis was able to contribute to the delimitation of Calea species, providing new information for species distinction within Calea sect. Meyeria.SIMONE CARTAXO-PINTO, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; ILGNER FERNANDO TAVARES VIEIRA, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; JEANE MARINHO NASCIMENTO, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; VINICIUS R. BUENO, UNIVERSIDADE FEDERAL DE PELOTAS; GUSTAVO HEIDEN, CPACT; CLAUDIA BARBIERI FERREIRA MENDONÇA, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; VANIA GONÇALVES-ESTEVES, UNIVERSIDADE FEDERAL DE PELOTAS.CARTAXO-PINTO, S.VIEIRA, I. F. T.NASCIMENTO, J. M.BUENO, V. R.HEIDEN, G.MENDONÇA, C. B. F.GONÇALVES-ESTEVES, V.2023-12-05T01:55:06Z2023-12-05T01:55:06Z2023-12-042023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePalynology, v. 47, n. 4, 2242449, p. 1-8, 2023.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1159128https://doi.org/10.1080/01916122.2023.2242449enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2023-12-05T01:55:06Zoai:www.alice.cnptia.embrapa.br:doc/1159128Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542023-12-05T01:55:06falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542023-12-05T01:55:06Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
title Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
spellingShingle Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
CARTAXO-PINTO, S.
Calea
Palynology
title_short Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
title_full Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
title_fullStr Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
title_full_unstemmed Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
title_sort Palynotaxonomy of Calea sect. Meyeria (Asteraceae: Neurolaeneae).
author CARTAXO-PINTO, S.
author_facet CARTAXO-PINTO, S.
VIEIRA, I. F. T.
NASCIMENTO, J. M.
BUENO, V. R.
HEIDEN, G.
MENDONÇA, C. B. F.
GONÇALVES-ESTEVES, V.
author_role author
author2 VIEIRA, I. F. T.
NASCIMENTO, J. M.
BUENO, V. R.
HEIDEN, G.
MENDONÇA, C. B. F.
GONÇALVES-ESTEVES, V.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv SIMONE CARTAXO-PINTO, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; ILGNER FERNANDO TAVARES VIEIRA, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; JEANE MARINHO NASCIMENTO, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; VINICIUS R. BUENO, UNIVERSIDADE FEDERAL DE PELOTAS; GUSTAVO HEIDEN, CPACT; CLAUDIA BARBIERI FERREIRA MENDONÇA, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; VANIA GONÇALVES-ESTEVES, UNIVERSIDADE FEDERAL DE PELOTAS.
dc.contributor.author.fl_str_mv CARTAXO-PINTO, S.
VIEIRA, I. F. T.
NASCIMENTO, J. M.
BUENO, V. R.
HEIDEN, G.
MENDONÇA, C. B. F.
GONÇALVES-ESTEVES, V.
dc.subject.por.fl_str_mv Calea
Palynology
topic Calea
Palynology
description Calea comprises 157 species that occur in the Neotropics. The genus is organized into eight subgenera and 18 sections. Calea sect. Meyeria consists of eight species occurring exclusively in south-central Brazil. In this study, pollen grains from these eight species were sampled from herborized flower buds in pre-anthesis. Pollen samples were acetolyzed, measured, and photographed under a light microscope. Unacetolyzed pollen grains were examined under a scanning electron microscope. The results were used to characterize pollen morphology and construct a palynotaxonomic key for Calea sect. Meyeria. The analyzed pollen grains were monads, isopolar, usually medium-sized, oblate spheroidal, tricolporate, with lalongate endoaperture, the sexine echinate and thicker than the nexine, and six spines in the apocolpium region. The eight species have very similar pollen grains, but some characters are informative for this section, namely pollen size, polar area, sexine ornamentation, and endoaperture characteristics. Despite the similarity of the pollen grains, palynological analysis was able to contribute to the delimitation of Calea species, providing new information for species distinction within Calea sect. Meyeria.
publishDate 2023
dc.date.none.fl_str_mv 2023-12-05T01:55:06Z
2023-12-05T01:55:06Z
2023-12-04
2023
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Palynology, v. 47, n. 4, 2242449, p. 1-8, 2023.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1159128
https://doi.org/10.1080/01916122.2023.2242449
identifier_str_mv Palynology, v. 47, n. 4, 2242449, p. 1-8, 2023.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1159128
https://doi.org/10.1080/01916122.2023.2242449
dc.language.iso.fl_str_mv eng
language eng
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instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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