Growth parameters of two rice cultivars on different water regimes in the soil.

Detalhes bibliográficos
Autor(a) principal: Vieira, Ana Rita Rodrigues
Data de Publicação: 2014
Outros Autores: Steinmetz, Silvio, Brunini, Orivaldo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/13521
Resumo: Experiments were carried out with two rice (Oryza sativa L.) cultivars. An upland cultivar CNA 791041 and an irrigated cultivar IR 50 with the objective to evaluate the physiological parameters theirs when submitted to water stress. The itrigation treatments were the following: (1) soil at field capacity and soil subjected to rainfall only; (II) irrigation based on 100, 75, 50, 25 and 0% of maximum evapotranspiration at flowering stage (beginning in the flowering initiation up to fully completed). Irrigation started when soil water potential at treatment (100% ETm) was -0,010 to -0,015 MPa. Water deficits in the soil were ensured by the use of rain shelters. The results indicated that the parameters of growth analysis, showed close correlation with the levels of irrigation utilized, and periods in which they were applied, as well as with the plant architecture of each cultivar and its development characteristics
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spelling Growth parameters of two rice cultivars on different water regimes in the soil.Parâmetros de crescimento de duas cultivares de arroz sob diferentes regimes de água no solo.water deficits; evapotranspiration; Oryza sativa; growth analysis; leaf areadéficit hídrico; evapotranspiração; Oryza sativa; análise de crescimento; área foliar.Experiments were carried out with two rice (Oryza sativa L.) cultivars. An upland cultivar CNA 791041 and an irrigated cultivar IR 50 with the objective to evaluate the physiological parameters theirs when submitted to water stress. The itrigation treatments were the following: (1) soil at field capacity and soil subjected to rainfall only; (II) irrigation based on 100, 75, 50, 25 and 0% of maximum evapotranspiration at flowering stage (beginning in the flowering initiation up to fully completed). Irrigation started when soil water potential at treatment (100% ETm) was -0,010 to -0,015 MPa. Water deficits in the soil were ensured by the use of rain shelters. The results indicated that the parameters of growth analysis, showed close correlation with the levels of irrigation utilized, and periods in which they were applied, as well as with the plant architecture of each cultivar and its development characteristicsExperimentos foram conduzidos com duas cultivares de arroz (Oryza sativa L.), sendo uma de arroz de sequeiro (CNA 791041) e outra, de arroz irrigado (IR 50), com o objetivo de avaliar seus parâmetros fisiológicos quando submetidas a estresse hídrico. Os tratamentos  de irrigação eram: (1) solo à capacidade de campo e solo submetido apenas à precipitação natural durante o estádio vegetativo; (II) irrigação com base em 100,75, 50, 25 e 0% de evapotranspiração máxima (ETn) (começo da iniciação floral até o florescimento completo). As parcelas eram irrigadas sempre que os tensiômetros instalados a 15 cm de profundidade do solo, no tratamento 100% de ETm, indicassem potencial matricial da água de -0,010 a - 0,015 MPa. A deficiéncia hídrica foi garantida pela utilização de abrigos de proteção de chuva. Os resultados mostraram que os parâmetros de análise de crescimento apresentaram uma estreita relação com os níveis de irrigação empregados, e períodos, em que estas medidas foram realizadas, bem como a arquitetura de cada cultivar e suas características de desenvolvimento.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraVieira, Ana Rita RodriguesSteinmetz, SilvioBrunini, Orivaldo2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13521Pesquisa Agropecuaria Brasileira; v.25, n.6, jun. 1990; 897-904Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 897-9041678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13521/7679info:eu-repo/semantics/openAccess2014-04-17T14:34:40Zoai:ojs.seer.sct.embrapa.br:article/13521Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T14:34:40Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Growth parameters of two rice cultivars on different water regimes in the soil.
Parâmetros de crescimento de duas cultivares de arroz sob diferentes regimes de água no solo.
title Growth parameters of two rice cultivars on different water regimes in the soil.
spellingShingle Growth parameters of two rice cultivars on different water regimes in the soil.
Vieira, Ana Rita Rodrigues
water deficits; evapotranspiration; Oryza sativa; growth analysis; leaf area
déficit hídrico; evapotranspiração; Oryza sativa; análise de crescimento; área foliar.
title_short Growth parameters of two rice cultivars on different water regimes in the soil.
title_full Growth parameters of two rice cultivars on different water regimes in the soil.
title_fullStr Growth parameters of two rice cultivars on different water regimes in the soil.
title_full_unstemmed Growth parameters of two rice cultivars on different water regimes in the soil.
title_sort Growth parameters of two rice cultivars on different water regimes in the soil.
author Vieira, Ana Rita Rodrigues
author_facet Vieira, Ana Rita Rodrigues
Steinmetz, Silvio
Brunini, Orivaldo
author_role author
author2 Steinmetz, Silvio
Brunini, Orivaldo
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Vieira, Ana Rita Rodrigues
Steinmetz, Silvio
Brunini, Orivaldo
dc.subject.por.fl_str_mv water deficits; evapotranspiration; Oryza sativa; growth analysis; leaf area
déficit hídrico; evapotranspiração; Oryza sativa; análise de crescimento; área foliar.
topic water deficits; evapotranspiration; Oryza sativa; growth analysis; leaf area
déficit hídrico; evapotranspiração; Oryza sativa; análise de crescimento; área foliar.
description Experiments were carried out with two rice (Oryza sativa L.) cultivars. An upland cultivar CNA 791041 and an irrigated cultivar IR 50 with the objective to evaluate the physiological parameters theirs when submitted to water stress. The itrigation treatments were the following: (1) soil at field capacity and soil subjected to rainfall only; (II) irrigation based on 100, 75, 50, 25 and 0% of maximum evapotranspiration at flowering stage (beginning in the flowering initiation up to fully completed). Irrigation started when soil water potential at treatment (100% ETm) was -0,010 to -0,015 MPa. Water deficits in the soil were ensured by the use of rain shelters. The results indicated that the parameters of growth analysis, showed close correlation with the levels of irrigation utilized, and periods in which they were applied, as well as with the plant architecture of each cultivar and its development characteristics
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/13521
url https://seer.sct.embrapa.br/index.php/pab/article/view/13521
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/13521/7679
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.25, n.6, jun. 1990; 897-904
Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 897-904
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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