Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência

Detalhes bibliográficos
Autor(a) principal: de Mendonça, Giovana Soares [UNESP]
Data de Publicação: 2015
Outros Autores: Martins, Cibele Chalita [UNESP], Martins, Dagoberto [UNESP], Lopes, Maria Teresa Gomes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/227973
Resumo: In the seeds of pioneer plants, the application of treatments for breaking dormancy, and selection by colour and size, are strategies for obtaining seeds of less dormancy and better germination performance. The aim of this study was to evaluate the effect of the physical and physiological aspects of seeds of the tall fringe-rush (Fimbristylis dichotoma) on germination and dormancy. To do this, the seeds were submitted to the following treatments in three studies: (i) control, immersion in H<inf>2</inf>SO<inf>4</inf> (98%, 36N) for 1 minute, immersion in KNO<inf>3</inf> (1, 2 and 3%) for 15 minutes, seeding on a substrate moistened with KNO<inf>3</inf> (0.2%) and exposure for 5 and 10 hours in a forced air circulation oven at 40 and 70 °C; (ii) classification of the seeds by colour (light and dark) and application of the following treatments: control, immersion of the seeds in H<inf>2</inf>SO<inf>4</inf> (98%, 36N) for 1 and 2 minutes, immersion in KNO3 (5% and 10%) for 15 and 30 minutes and seeding on a substrate moistened with KNO<inf>3</inf> (0.2%); (iii) classification by size (0.60, 0.50 and 0.40 mm) and germination on a substrate moistened with KNO<inf>3</inf> (0.2%) or distilled H<inf>2</inf>O. The seeds were evaluated by germination test, first count and germination speed index. Moistening the substrate with KNO<inf>3</inf> (0.2%), and heat treatment at 40 °C for 10 hours improve performance in seeds of the tall fringe-rush. Light-coloured seeds do not display dormancy. Mediumsized seeds of the tall fringe-rush show better performance in terms of percentage and speed of germination.
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spelling Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormênciaPhysical and physiological aspects of seeds of Fimbristylis dicothoma as related to germination and dormancyColourSizeTall fringe-rushTemperatureWeedIn the seeds of pioneer plants, the application of treatments for breaking dormancy, and selection by colour and size, are strategies for obtaining seeds of less dormancy and better germination performance. The aim of this study was to evaluate the effect of the physical and physiological aspects of seeds of the tall fringe-rush (Fimbristylis dichotoma) on germination and dormancy. To do this, the seeds were submitted to the following treatments in three studies: (i) control, immersion in H<inf>2</inf>SO<inf>4</inf> (98%, 36N) for 1 minute, immersion in KNO<inf>3</inf> (1, 2 and 3%) for 15 minutes, seeding on a substrate moistened with KNO<inf>3</inf> (0.2%) and exposure for 5 and 10 hours in a forced air circulation oven at 40 and 70 °C; (ii) classification of the seeds by colour (light and dark) and application of the following treatments: control, immersion of the seeds in H<inf>2</inf>SO<inf>4</inf> (98%, 36N) for 1 and 2 minutes, immersion in KNO3 (5% and 10%) for 15 and 30 minutes and seeding on a substrate moistened with KNO<inf>3</inf> (0.2%); (iii) classification by size (0.60, 0.50 and 0.40 mm) and germination on a substrate moistened with KNO<inf>3</inf> (0.2%) or distilled H<inf>2</inf>O. The seeds were evaluated by germination test, first count and germination speed index. Moistening the substrate with KNO<inf>3</inf> (0.2%), and heat treatment at 40 °C for 10 hours improve performance in seeds of the tall fringe-rush. Light-coloured seeds do not display dormancy. Mediumsized seeds of the tall fringe-rush show better performance in terms of percentage and speed of germination.Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista 'Júlio de Mesquita Filho'Departamento Produção Vegetal, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista 'Júlio de Mesquita Filho'Universidade Federal do Amazonas/UFAM, Departamento de Produção Animal e Vegetal, Faculdade de Ciências AgráriasFaculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista 'Júlio de Mesquita Filho'Departamento Produção Vegetal, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista 'Júlio de Mesquita Filho'Universidade Estadual Paulista (UNESP)Universidade Federal do Amazonas/UFAM, Departamento de Produção Animal e Vegetal, Faculdade de Ciências Agráriasde Mendonça, Giovana Soares [UNESP]Martins, Cibele Chalita [UNESP]Martins, Dagoberto [UNESP]Lopes, Maria Teresa Gomes2022-04-29T07:26:01Z2022-04-29T07:26:01Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article539-545Revista Ciencia Agronomica, v. 46, n. 3, p. 539-545, 2015.1806-66900045-6888http://hdl.handle.net/11449/2279732-s2.0-84929411610Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Ciencia Agronomicainfo:eu-repo/semantics/openAccess2024-06-07T13:56:13Zoai:repositorio.unesp.br:11449/227973Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:31:49.561577Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
Physical and physiological aspects of seeds of Fimbristylis dicothoma as related to germination and dormancy
title Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
spellingShingle Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
de Mendonça, Giovana Soares [UNESP]
Colour
Size
Tall fringe-rush
Temperature
Weed
title_short Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
title_full Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
title_fullStr Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
title_full_unstemmed Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
title_sort Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
author de Mendonça, Giovana Soares [UNESP]
author_facet de Mendonça, Giovana Soares [UNESP]
Martins, Cibele Chalita [UNESP]
Martins, Dagoberto [UNESP]
Lopes, Maria Teresa Gomes
author_role author
author2 Martins, Cibele Chalita [UNESP]
Martins, Dagoberto [UNESP]
Lopes, Maria Teresa Gomes
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Federal do Amazonas/UFAM, Departamento de Produção Animal e Vegetal, Faculdade de Ciências Agrárias
dc.contributor.author.fl_str_mv de Mendonça, Giovana Soares [UNESP]
Martins, Cibele Chalita [UNESP]
Martins, Dagoberto [UNESP]
Lopes, Maria Teresa Gomes
dc.subject.por.fl_str_mv Colour
Size
Tall fringe-rush
Temperature
Weed
topic Colour
Size
Tall fringe-rush
Temperature
Weed
description In the seeds of pioneer plants, the application of treatments for breaking dormancy, and selection by colour and size, are strategies for obtaining seeds of less dormancy and better germination performance. The aim of this study was to evaluate the effect of the physical and physiological aspects of seeds of the tall fringe-rush (Fimbristylis dichotoma) on germination and dormancy. To do this, the seeds were submitted to the following treatments in three studies: (i) control, immersion in H<inf>2</inf>SO<inf>4</inf> (98%, 36N) for 1 minute, immersion in KNO<inf>3</inf> (1, 2 and 3%) for 15 minutes, seeding on a substrate moistened with KNO<inf>3</inf> (0.2%) and exposure for 5 and 10 hours in a forced air circulation oven at 40 and 70 °C; (ii) classification of the seeds by colour (light and dark) and application of the following treatments: control, immersion of the seeds in H<inf>2</inf>SO<inf>4</inf> (98%, 36N) for 1 and 2 minutes, immersion in KNO3 (5% and 10%) for 15 and 30 minutes and seeding on a substrate moistened with KNO<inf>3</inf> (0.2%); (iii) classification by size (0.60, 0.50 and 0.40 mm) and germination on a substrate moistened with KNO<inf>3</inf> (0.2%) or distilled H<inf>2</inf>O. The seeds were evaluated by germination test, first count and germination speed index. Moistening the substrate with KNO<inf>3</inf> (0.2%), and heat treatment at 40 °C for 10 hours improve performance in seeds of the tall fringe-rush. Light-coloured seeds do not display dormancy. Mediumsized seeds of the tall fringe-rush show better performance in terms of percentage and speed of germination.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-01
2022-04-29T07:26:01Z
2022-04-29T07:26:01Z
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 Revista Ciencia Agronomica, v. 46, n. 3, p. 539-545, 2015.
1806-6690
0045-6888
http://hdl.handle.net/11449/227973
2-s2.0-84929411610
identifier_str_mv Revista Ciencia Agronomica, v. 46, n. 3, p. 539-545, 2015.
1806-6690
0045-6888
2-s2.0-84929411610
url http://hdl.handle.net/11449/227973
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Revista Ciencia Agronomica
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 539-545
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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