Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae)
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Hoehnea |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2236-89062018000400669 |
Resumo: | ABSTRACT Flowers with heterodynamous stamens can present differences in the pollen grains of each stamen size group. Species of Aeschynomene L. present didynamous stamens (five long and five short) but little is known about their pollen dimorphism. The objective of this study was to increase the knowledge about the pollen characteristics in Aeschynomene and emphasize the possible morphological differences between the pollen grains of long and short stamens in order to contribute to ecological and taxonomic studies. Pollen grains from the two groups of stamens size of ten species were analyzed separately, according to the standard methodology for studies of pollen morphology. In addition, analyses of variance, comparison of means and base index were performed. The results showed that the amb, shape, endoaperture type and sexine ornamentation did not vary in the pollen grains of the long and short stamens in the same specimen, but they varied among the species. However, in relation to the size of the pollen grains of the two groups of stamens, four species presented significant differences regarding the size of the polar and equatorial axes. The pollen morphological data obtained considering the heteromorphism of the stamens can contribute to the knowledge of the repro ductive dynamics of the genus, and to the systematic studies. |
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Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae)FabaceaeheteromorphismDalbergia subcladePalynologypollen morphologyABSTRACT Flowers with heterodynamous stamens can present differences in the pollen grains of each stamen size group. Species of Aeschynomene L. present didynamous stamens (five long and five short) but little is known about their pollen dimorphism. The objective of this study was to increase the knowledge about the pollen characteristics in Aeschynomene and emphasize the possible morphological differences between the pollen grains of long and short stamens in order to contribute to ecological and taxonomic studies. Pollen grains from the two groups of stamens size of ten species were analyzed separately, according to the standard methodology for studies of pollen morphology. In addition, analyses of variance, comparison of means and base index were performed. The results showed that the amb, shape, endoaperture type and sexine ornamentation did not vary in the pollen grains of the long and short stamens in the same specimen, but they varied among the species. However, in relation to the size of the pollen grains of the two groups of stamens, four species presented significant differences regarding the size of the polar and equatorial axes. The pollen morphological data obtained considering the heteromorphism of the stamens can contribute to the knowledge of the repro ductive dynamics of the genus, and to the systematic studies.Instituto de Pesquisas Ambientais2018-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2236-89062018000400669Hoehnea v.45 n.4 2018reponame:Hoehneainstname:Instituto de Botânica (IBT)instacron:IBT10.1590/2236-8906-44/2018info:eu-repo/semantics/openAccessAntonio-Domingues,HigorCorrêa,Angela Maria da SilvaRossi,Monica LanzoniMartinelli,Adriana Pinheiroda Luz,Cynthia Fernandes Pintoeng2019-01-14T00:00:00Zoai:scielo:S2236-89062018000400669Revistahttp://www.ibot.sp.gov.br/publicacoes/hoehnea/sobre_hoehnea.phpPUBhttps://old.scielo.br/oai/scielo-oai.php||hoehneaibt@gmail.com2236-89060073-2877opendoar:2019-01-14T00:00Hoehnea - Instituto de Botânica (IBT)false |
dc.title.none.fl_str_mv |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) |
title |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) |
spellingShingle |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) Antonio-Domingues,Higor Fabaceae heteromorphism Dalbergia subclade Palynology pollen morphology |
title_short |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) |
title_full |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) |
title_fullStr |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) |
title_full_unstemmed |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) |
title_sort |
Morphological analysis of pollen grains from heterodynamous stamens of some Aeschynomene L. (Le guminosae - Papilionoideae - Dalbergieae) |
author |
Antonio-Domingues,Higor |
author_facet |
Antonio-Domingues,Higor Corrêa,Angela Maria da Silva Rossi,Monica Lanzoni Martinelli,Adriana Pinheiro da Luz,Cynthia Fernandes Pinto |
author_role |
author |
author2 |
Corrêa,Angela Maria da Silva Rossi,Monica Lanzoni Martinelli,Adriana Pinheiro da Luz,Cynthia Fernandes Pinto |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Antonio-Domingues,Higor Corrêa,Angela Maria da Silva Rossi,Monica Lanzoni Martinelli,Adriana Pinheiro da Luz,Cynthia Fernandes Pinto |
dc.subject.por.fl_str_mv |
Fabaceae heteromorphism Dalbergia subclade Palynology pollen morphology |
topic |
Fabaceae heteromorphism Dalbergia subclade Palynology pollen morphology |
description |
ABSTRACT Flowers with heterodynamous stamens can present differences in the pollen grains of each stamen size group. Species of Aeschynomene L. present didynamous stamens (five long and five short) but little is known about their pollen dimorphism. The objective of this study was to increase the knowledge about the pollen characteristics in Aeschynomene and emphasize the possible morphological differences between the pollen grains of long and short stamens in order to contribute to ecological and taxonomic studies. Pollen grains from the two groups of stamens size of ten species were analyzed separately, according to the standard methodology for studies of pollen morphology. In addition, analyses of variance, comparison of means and base index were performed. The results showed that the amb, shape, endoaperture type and sexine ornamentation did not vary in the pollen grains of the long and short stamens in the same specimen, but they varied among the species. However, in relation to the size of the pollen grains of the two groups of stamens, four species presented significant differences regarding the size of the polar and equatorial axes. The pollen morphological data obtained considering the heteromorphism of the stamens can contribute to the knowledge of the repro ductive dynamics of the genus, and to the systematic studies. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-01 |
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=S2236-89062018000400669 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2236-89062018000400669 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2236-8906-44/2018 |
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 |
Instituto de Pesquisas Ambientais |
publisher.none.fl_str_mv |
Instituto de Pesquisas Ambientais |
dc.source.none.fl_str_mv |
Hoehnea v.45 n.4 2018 reponame:Hoehnea instname:Instituto de Botânica (IBT) instacron:IBT |
instname_str |
Instituto de Botânica (IBT) |
instacron_str |
IBT |
institution |
IBT |
reponame_str |
Hoehnea |
collection |
Hoehnea |
repository.name.fl_str_mv |
Hoehnea - Instituto de Botânica (IBT) |
repository.mail.fl_str_mv |
||hoehneaibt@gmail.com |
_version_ |
1754193648010919936 |