Aspectos físicos e fisiológicos de sementes de Fimbristylis dicothoma relacionados à germinação e dormência
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
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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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 |
|
_version_ |
1808128943360835584 |