Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng spa |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.revistaphyton.fund-romuloraggio.org.ar/vol80.html http://hdl.handle.net/11449/73075 |
Resumo: | After a fire event, germination of seeds with hard coats can be enhanced. In the present study, we investigated whether germination of Mimosa bimucronata (DC.) Kuntze (Fabaceae) seeds, which present hard coats, is increased after fire, even though these trees usually occur in damp areas, where fire is a transient event. Fire events were manipulated in trays filled with soil covered with different amounts of dry grasses, characterizing three treatments: a) 0g (control group); b) 300g, and c) 450g of dry grass. Burning treatments were applied to seeds positioned either on the soil surface or buried in the soil. Germination experiments were carried out at 0-h and 24-h after fire to obtain the germination percentage and the Germination Speed Index (GSI). For buried seeds, the control and the 300g treatments presented significantly higher germination percentages than the 450g treatment. On the other hand, the GSI was significantly higher in the 300g treatment. Significant differences were not found between 0-h and 24-h. Seeds on the soil surface did not survive after burning. Our study showed that temperatures around 100 °C significantly decrease the germinability of M. bimucronata seeds. However, when seeds were buried, the germination percentage did not differ between the control group and the 300g treatment. Results also suggest that temperatures around 60 °C may enhance the velocity of germination of M. bimucronata seeds. |
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Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuegoSeed germination after fire: A study with a plant inhabiting non-fire-prone areasFabaceaeGerminationHard seed coatHigh temperaturesAfter a fire event, germination of seeds with hard coats can be enhanced. In the present study, we investigated whether germination of Mimosa bimucronata (DC.) Kuntze (Fabaceae) seeds, which present hard coats, is increased after fire, even though these trees usually occur in damp areas, where fire is a transient event. Fire events were manipulated in trays filled with soil covered with different amounts of dry grasses, characterizing three treatments: a) 0g (control group); b) 300g, and c) 450g of dry grass. Burning treatments were applied to seeds positioned either on the soil surface or buried in the soil. Germination experiments were carried out at 0-h and 24-h after fire to obtain the germination percentage and the Germination Speed Index (GSI). For buried seeds, the control and the 300g treatments presented significantly higher germination percentages than the 450g treatment. On the other hand, the GSI was significantly higher in the 300g treatment. Significant differences were not found between 0-h and 24-h. Seeds on the soil surface did not survive after burning. Our study showed that temperatures around 100 °C significantly decrease the germinability of M. bimucronata seeds. However, when seeds were buried, the germination percentage did not differ between the control group and the 300g treatment. Results also suggest that temperatures around 60 °C may enhance the velocity of germination of M. bimucronata seeds.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)São Paulo State University (Unesp) Department of Botany, IB, Botucatu, 18618-000, São PauloFederal University of São Paulo (Unifesp) Department of Biological Sciences, Diadema, 09941-510, São PauloSão Paulo State University (Unesp) Department of Botany, IB, Botucatu, 18618-000, São PauloFAPESP: 05/57999-3FAPESP: 04/06737-6Universidade Estadual Paulista (Unesp)Universidade Federal de São Paulo (UNIFESP)Menezes, L. C. C. R. de [UNESP]Rossi, M. N.2014-05-27T11:26:20Z2014-05-27T11:26:20Z2011-12-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article153-160application/pdfhttp://www.revistaphyton.fund-romuloraggio.org.ar/vol80.htmlPhyton, v. 80, p. 153-160.0031-94571851-5657http://hdl.handle.net/11449/73075WOS:0002993012000232-s2.0-834551956832-s2.0-83455195683.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengspaPhyton0.2620,1730,173info:eu-repo/semantics/openAccess2023-12-15T06:17:25Zoai:repositorio.unesp.br:11449/73075Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:24:03.902417Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego Seed germination after fire: A study with a plant inhabiting non-fire-prone areas |
title |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego |
spellingShingle |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego Menezes, L. C. C. R. de [UNESP] Fabaceae Germination Hard seed coat High temperatures |
title_short |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego |
title_full |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego |
title_fullStr |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego |
title_full_unstemmed |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego |
title_sort |
Germinación de semillas después del fuego: Un estudio con una planta que habita áreas no propensas al fuego |
author |
Menezes, L. C. C. R. de [UNESP] |
author_facet |
Menezes, L. C. C. R. de [UNESP] Rossi, M. N. |
author_role |
author |
author2 |
Rossi, M. N. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de São Paulo (UNIFESP) |
dc.contributor.author.fl_str_mv |
Menezes, L. C. C. R. de [UNESP] Rossi, M. N. |
dc.subject.por.fl_str_mv |
Fabaceae Germination Hard seed coat High temperatures |
topic |
Fabaceae Germination Hard seed coat High temperatures |
description |
After a fire event, germination of seeds with hard coats can be enhanced. In the present study, we investigated whether germination of Mimosa bimucronata (DC.) Kuntze (Fabaceae) seeds, which present hard coats, is increased after fire, even though these trees usually occur in damp areas, where fire is a transient event. Fire events were manipulated in trays filled with soil covered with different amounts of dry grasses, characterizing three treatments: a) 0g (control group); b) 300g, and c) 450g of dry grass. Burning treatments were applied to seeds positioned either on the soil surface or buried in the soil. Germination experiments were carried out at 0-h and 24-h after fire to obtain the germination percentage and the Germination Speed Index (GSI). For buried seeds, the control and the 300g treatments presented significantly higher germination percentages than the 450g treatment. On the other hand, the GSI was significantly higher in the 300g treatment. Significant differences were not found between 0-h and 24-h. Seeds on the soil surface did not survive after burning. Our study showed that temperatures around 100 °C significantly decrease the germinability of M. bimucronata seeds. However, when seeds were buried, the germination percentage did not differ between the control group and the 300g treatment. Results also suggest that temperatures around 60 °C may enhance the velocity of germination of M. bimucronata seeds. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-12-20 2014-05-27T11:26:20Z 2014-05-27T11:26:20Z |
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://www.revistaphyton.fund-romuloraggio.org.ar/vol80.html Phyton, v. 80, p. 153-160. 0031-9457 1851-5657 http://hdl.handle.net/11449/73075 WOS:000299301200023 2-s2.0-83455195683 2-s2.0-83455195683.pdf |
url |
http://www.revistaphyton.fund-romuloraggio.org.ar/vol80.html http://hdl.handle.net/11449/73075 |
identifier_str_mv |
Phyton, v. 80, p. 153-160. 0031-9457 1851-5657 WOS:000299301200023 2-s2.0-83455195683 2-s2.0-83455195683.pdf |
dc.language.iso.fl_str_mv |
eng spa |
language |
eng spa |
dc.relation.none.fl_str_mv |
Phyton 0.262 0,173 0,173 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
153-160 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 |
|
_version_ |
1808129197470646272 |