GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5902/1980509821112 http://hdl.handle.net/11449/157908 |
Resumo: | The period of germination and the establishment of seedlings are important factors for the survival of species, mainly in places where availability of water is limited, as in the Caatinga region. In this sense, the purpose of this research was to evaluate the effect of water stress on the germination of Piptadenia moniliformis Benth seeds. Three lots (L1, L2 e L3) were used, corresponding to the production years of 2006, 2007 and 2008, respectively. Before the germination test, the seeds were submitted to scarification in concentrated sulfur acid for 30 minutes. To induce water deficit, polyethyleneglicol (PEG 6000) was used, in the following osmotic potentials: - 0,3; -0,6; -0,9, -1,2 and -1,5 MPa and water (0 MPa) under the temperatures of 25 and 30 ºC. The features the experiment evaluated were: percentage of germination and of normal seedlings, germination speed index and the dry mass of seedlings. The germinating process of Piptadenia moniliformis Benth seeds is jeopardized from water potentials inferior to -0,6 MPa at 25 and 30 °C; water potentials equivalent or inferior to -1,2 MPa inhibit the formation of normal seedlings in both temperatures; the tolerance to water stress simulated with PEG 6000 is variable among seedling lots and germination temperatures. |
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GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICOGERMINATION OF Piptadenia moniliformis Benth SEEDS UNDER WATER STRESSPEGseedlings growthCaatingaPEGcrescimento de plântulasCaatingaThe period of germination and the establishment of seedlings are important factors for the survival of species, mainly in places where availability of water is limited, as in the Caatinga region. In this sense, the purpose of this research was to evaluate the effect of water stress on the germination of Piptadenia moniliformis Benth seeds. Three lots (L1, L2 e L3) were used, corresponding to the production years of 2006, 2007 and 2008, respectively. Before the germination test, the seeds were submitted to scarification in concentrated sulfur acid for 30 minutes. To induce water deficit, polyethyleneglicol (PEG 6000) was used, in the following osmotic potentials: - 0,3; -0,6; -0,9, -1,2 and -1,5 MPa and water (0 MPa) under the temperatures of 25 and 30 ºC. The features the experiment evaluated were: percentage of germination and of normal seedlings, germination speed index and the dry mass of seedlings. The germinating process of Piptadenia moniliformis Benth seeds is jeopardized from water potentials inferior to -0,6 MPa at 25 and 30 °C; water potentials equivalent or inferior to -1,2 MPa inhibit the formation of normal seedlings in both temperatures; the tolerance to water stress simulated with PEG 6000 is variable among seedling lots and germination temperatures.O período de germinação e o estabelecimento de plântulas é um dos fatores mais importantes para a sobrevivência das espécies, principalmente nos locais em que a disponibilidade de água é limitada, como na região da Caatinga. Neste sentido, o objetivo deste trabalho foi avaliar o efeito do estresse hídrico sobre a germinação de sementes de Piptadenia moniliformis Benth. Foram utilizados três lotes (L1, L2 e L3), correspondentes aos anos de produção de 2006, 2007 e 2008, respectivamente. Antes do teste de germinação, as sementes foram escarificadas com ácido sulfúrico concentrado durante 30 minutos. Para induzir o deficit hídrico, foi utilizado o polietileno glicol (PEG 6000), nos seguintes potenciais osmóticos: - 0,3; -0,6; -0,9, -1,2 e -1,5 MPa e a água (0 MPa) sob as temperaturas de 25 e 30ºC. As características avaliadas foram: porcentagem de germinação e de plântulas normais, índice de velocidade de germinação e massa seca de plântulas. O processo germinativo de sementes de Piptadenia moniliformis Benth. é comprometido a partir de potenciais hídricos inferiores a -0,6 MPa a 25 e 30 °C; potenciais hídricos iguais ou inferiores a -1,2 MPa inibem a formação de plântulas normais nas duas temperaturas; a tolerância ao estresse hídrico simulado com PEG 6000 é variável entre lotes de sementes e temperaturas de germinação.Universidade Federal da ParaíbaUniversidade Estadual Paulista Faculdade de Ciências Agrárias e VeterináriasUniversidade Estadual Paulista Faculdade de Ciências Agrárias e VeterináriasUniversidade Federal de Santa MariaUniversidade Federal da ParaíbaUniversidade Estadual Paulista (Unesp)Azerêdo, Gilvaneide Alves DePaula, Rinaldo Cesar DeValeri, Sérgio Valiengo2018-11-12T17:27:29Z2018-11-12T17:27:29Z2016-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article193-202application/pdfhttp://dx.doi.org/10.5902/1980509821112Ciência Florestal. Universidade Federal de Santa Maria, v. 26, n. 1, p. 193-202, 2016.1980-5098http://hdl.handle.net/11449/15790810.5902/1980509821112S1980-50982016000100193S1980-50982016000100193.pdf18206261000810270000-0001-9088-3924SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporCiência Florestal0,420info:eu-repo/semantics/openAccess2023-10-16T06:09:49Zoai:repositorio.unesp.br:11449/157908Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-16T06:09:49Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO GERMINATION OF Piptadenia moniliformis Benth SEEDS UNDER WATER STRESS |
title |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO |
spellingShingle |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO Azerêdo, Gilvaneide Alves De PEG seedlings growth Caatinga PEG crescimento de plântulas Caatinga |
title_short |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO |
title_full |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO |
title_fullStr |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO |
title_full_unstemmed |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO |
title_sort |
GERMINAÇÃO DE SEMENTES DE Piptadenia moniliformis Benth. SOB ESTRESSE HÍDRICO |
author |
Azerêdo, Gilvaneide Alves De |
author_facet |
Azerêdo, Gilvaneide Alves De Paula, Rinaldo Cesar De Valeri, Sérgio Valiengo |
author_role |
author |
author2 |
Paula, Rinaldo Cesar De Valeri, Sérgio Valiengo |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Federal da Paraíba Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Azerêdo, Gilvaneide Alves De Paula, Rinaldo Cesar De Valeri, Sérgio Valiengo |
dc.subject.por.fl_str_mv |
PEG seedlings growth Caatinga PEG crescimento de plântulas Caatinga |
topic |
PEG seedlings growth Caatinga PEG crescimento de plântulas Caatinga |
description |
The period of germination and the establishment of seedlings are important factors for the survival of species, mainly in places where availability of water is limited, as in the Caatinga region. In this sense, the purpose of this research was to evaluate the effect of water stress on the germination of Piptadenia moniliformis Benth seeds. Three lots (L1, L2 e L3) were used, corresponding to the production years of 2006, 2007 and 2008, respectively. Before the germination test, the seeds were submitted to scarification in concentrated sulfur acid for 30 minutes. To induce water deficit, polyethyleneglicol (PEG 6000) was used, in the following osmotic potentials: - 0,3; -0,6; -0,9, -1,2 and -1,5 MPa and water (0 MPa) under the temperatures of 25 and 30 ºC. The features the experiment evaluated were: percentage of germination and of normal seedlings, germination speed index and the dry mass of seedlings. The germinating process of Piptadenia moniliformis Benth seeds is jeopardized from water potentials inferior to -0,6 MPa at 25 and 30 °C; water potentials equivalent or inferior to -1,2 MPa inhibit the formation of normal seedlings in both temperatures; the tolerance to water stress simulated with PEG 6000 is variable among seedling lots and germination temperatures. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03-01 2018-11-12T17:27:29Z 2018-11-12T17:27:29Z |
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/10.5902/1980509821112 Ciência Florestal. Universidade Federal de Santa Maria, v. 26, n. 1, p. 193-202, 2016. 1980-5098 http://hdl.handle.net/11449/157908 10.5902/1980509821112 S1980-50982016000100193 S1980-50982016000100193.pdf 1820626100081027 0000-0001-9088-3924 |
url |
http://dx.doi.org/10.5902/1980509821112 http://hdl.handle.net/11449/157908 |
identifier_str_mv |
Ciência Florestal. Universidade Federal de Santa Maria, v. 26, n. 1, p. 193-202, 2016. 1980-5098 10.5902/1980509821112 S1980-50982016000100193 S1980-50982016000100193.pdf 1820626100081027 0000-0001-9088-3924 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Ciência Florestal 0,420 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
193-202 application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
SciELO 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_ |
1803046027315380224 |