Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae)
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | spa |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.15517/rbt.v63i4.16956 http://hdl.handle.net/11449/172771 |
Resumo: | Comanthera brasiliana, C. magnifica and C. suberosa (Eriocaulaceae) are included in the Brazilian list of endangered species, due to intensive harvest and micro-endemism. These species form the clade of Comanthera magnifica, along with C. brunnea and C. linearis. Germination, seed morphology and post-seminal development were studied aiming to characterize all five species and to provide information for their conservation. Seeds were collected in “campos rupestres” of Minas Gerais, Brazil. Seed morphology was examined using scanning electron microscope. For germination tests, mature seeds were placed in Petri dishes lined with filter paper dampened with distilled water at 25 °C and fluorescent light; four repetitions with 15 seeds were performed for each species. For the anatomical analysis of post-seminal development, seedlings at different developmental stages were included in historesin, cut with a rotatory microtome and examined under a light microscope. The structure of the seed coat and the shape and size of the seeds were characteristics that allowed species differentiation, and based on the seeds morphological characteristics, an identification key is provided. The seed germination was high (> 90 %) and fast (< 7 days). Germination occured through the axis protrusion of the embryo. Approximately four days after germination, the first leaf develops and is followed by the adventitious roots. After 10-15 days, the second leaf and the new adventitious roots develop. In field conditions, the studied species occur in quartzite soils and their small seeds (dust-like type) germinate faster than the other Eriocaulaceae species (from mesic soils). These results provide reliable information that may contribute to the species management and conservation. |
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Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae)Seed morphology and post-seminal development in species of Comanthera (Eriocaulaceae)BrazilComantheraEriocaulaceaeEverlasting plantsGerminationSeed morphologyComanthera brasiliana, C. magnifica and C. suberosa (Eriocaulaceae) are included in the Brazilian list of endangered species, due to intensive harvest and micro-endemism. These species form the clade of Comanthera magnifica, along with C. brunnea and C. linearis. Germination, seed morphology and post-seminal development were studied aiming to characterize all five species and to provide information for their conservation. Seeds were collected in “campos rupestres” of Minas Gerais, Brazil. Seed morphology was examined using scanning electron microscope. For germination tests, mature seeds were placed in Petri dishes lined with filter paper dampened with distilled water at 25 °C and fluorescent light; four repetitions with 15 seeds were performed for each species. For the anatomical analysis of post-seminal development, seedlings at different developmental stages were included in historesin, cut with a rotatory microtome and examined under a light microscope. The structure of the seed coat and the shape and size of the seeds were characteristics that allowed species differentiation, and based on the seeds morphological characteristics, an identification key is provided. The seed germination was high (> 90 %) and fast (< 7 days). Germination occured through the axis protrusion of the embryo. Approximately four days after germination, the first leaf develops and is followed by the adventitious roots. After 10-15 days, the second leaf and the new adventitious roots develop. In field conditions, the studied species occur in quartzite soils and their small seeds (dust-like type) germinate faster than the other Eriocaulaceae species (from mesic soils). These results provide reliable information that may contribute to the species management and conservation.Instituto de Biociências UNESP - Universidade Estadual Paulista Departamento de Botânica Laboratório de Anatomia Vegetal, Campus de Rio ClaroInstituto de Biociências UNESP - Universidade Estadual Paulista Departamento de Botânica Laboratório de Anatomia Vegetal, Campus de Rio ClaroUniversidade Estadual Paulista (Unesp)Corredor, Blanca Auxiliadora Dugarte [UNESP]Escobar, Diego Fernando Escobar [UNESP]Scatena, Vera Lúcia [UNESP]2018-12-11T17:02:07Z2018-12-11T17:02:07Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1127-1135application/pdfhttp://dx.doi.org/10.15517/rbt.v63i4.16956Revista de Biologia Tropical, v. 63, n. 4, p. 1127-1135, 2015.2215-20750034-7744http://hdl.handle.net/11449/17277110.15517/rbt.v63i4.169562-s2.0-849624332442-s2.0-84962433244.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPspaRevista de Biologia Tropical0,326info:eu-repo/semantics/openAccess2024-01-21T06:24:08Zoai:repositorio.unesp.br:11449/172771Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:35:54.622934Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) Seed morphology and post-seminal development in species of Comanthera (Eriocaulaceae) |
title |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) |
spellingShingle |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) Corredor, Blanca Auxiliadora Dugarte [UNESP] Brazil Comanthera Eriocaulaceae Everlasting plants Germination Seed morphology |
title_short |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) |
title_full |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) |
title_fullStr |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) |
title_full_unstemmed |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) |
title_sort |
Morfología de semillas y desarrollo post-seminal de especies de Comanthera (Eriocaulaceae) |
author |
Corredor, Blanca Auxiliadora Dugarte [UNESP] |
author_facet |
Corredor, Blanca Auxiliadora Dugarte [UNESP] Escobar, Diego Fernando Escobar [UNESP] Scatena, Vera Lúcia [UNESP] |
author_role |
author |
author2 |
Escobar, Diego Fernando Escobar [UNESP] Scatena, Vera Lúcia [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Corredor, Blanca Auxiliadora Dugarte [UNESP] Escobar, Diego Fernando Escobar [UNESP] Scatena, Vera Lúcia [UNESP] |
dc.subject.por.fl_str_mv |
Brazil Comanthera Eriocaulaceae Everlasting plants Germination Seed morphology |
topic |
Brazil Comanthera Eriocaulaceae Everlasting plants Germination Seed morphology |
description |
Comanthera brasiliana, C. magnifica and C. suberosa (Eriocaulaceae) are included in the Brazilian list of endangered species, due to intensive harvest and micro-endemism. These species form the clade of Comanthera magnifica, along with C. brunnea and C. linearis. Germination, seed morphology and post-seminal development were studied aiming to characterize all five species and to provide information for their conservation. Seeds were collected in “campos rupestres” of Minas Gerais, Brazil. Seed morphology was examined using scanning electron microscope. For germination tests, mature seeds were placed in Petri dishes lined with filter paper dampened with distilled water at 25 °C and fluorescent light; four repetitions with 15 seeds were performed for each species. For the anatomical analysis of post-seminal development, seedlings at different developmental stages were included in historesin, cut with a rotatory microtome and examined under a light microscope. The structure of the seed coat and the shape and size of the seeds were characteristics that allowed species differentiation, and based on the seeds morphological characteristics, an identification key is provided. The seed germination was high (> 90 %) and fast (< 7 days). Germination occured through the axis protrusion of the embryo. Approximately four days after germination, the first leaf develops and is followed by the adventitious roots. After 10-15 days, the second leaf and the new adventitious roots develop. In field conditions, the studied species occur in quartzite soils and their small seeds (dust-like type) germinate faster than the other Eriocaulaceae species (from mesic soils). These results provide reliable information that may contribute to the species management and conservation. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01 2018-12-11T17:02:07Z 2018-12-11T17:02:07Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.15517/rbt.v63i4.16956 Revista de Biologia Tropical, v. 63, n. 4, p. 1127-1135, 2015. 2215-2075 0034-7744 http://hdl.handle.net/11449/172771 10.15517/rbt.v63i4.16956 2-s2.0-84962433244 2-s2.0-84962433244.pdf |
url |
http://dx.doi.org/10.15517/rbt.v63i4.16956 http://hdl.handle.net/11449/172771 |
identifier_str_mv |
Revista de Biologia Tropical, v. 63, n. 4, p. 1127-1135, 2015. 2215-2075 0034-7744 10.15517/rbt.v63i4.16956 2-s2.0-84962433244 2-s2.0-84962433244.pdf |
dc.language.iso.fl_str_mv |
spa |
language |
spa |
dc.relation.none.fl_str_mv |
Revista de Biologia Tropical 0,326 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1127-1135 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129534723096576 |