Irrigated rice plant growth in the main crop and the ratoon

Detalhes bibliográficos
Autor(a) principal: Costa, Elisane Galbe de Carvalho
Data de Publicação: 2000
Outros Autores: Santos, Alberto Baêta dos, Zimmermann, Francisco José Pfeilsticker
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/5981
Resumo: A field experiment was conducted to evaluate the physiological characteristics correlated to grain yield in both main and ratoon crops with the objective to establish the criteria for genotype selection in flooding irrigated rice. The experiment was arranged in a group balanced block design with four replications where the groups represented the growth cycles and the plots corresponded to the genotypes within cycles. The intermediate cycle genotypes in the ratoon crop presented the highest values for total aerial dry weight and leaf dry weight as compared to the short cycle cultivars. In the main crop, in addition to those parameters, the same genotypes presented the highest values for root dry weight, root density, leaf area index and leaf area duration. Leaf area ratio, specific leaf area, and leaf weight ratio in the main crop showed the highest at 20 days after emergence and decreased thereafter. Correlation analysis were performed among the variables studied and among those and grain yield of the main and ratoon crops. Physiological indexes of the main crop were correlated to grain yield but these correlations were not found significant for the ratoon crop.
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spelling Irrigated rice plant growth in the main crop and the ratoonCrescimento da cultura principal e da soca de genótipos de arroz irrigado por inundaçãoOryza sativa; grain; yields; dry matter; leaf area; root densityOryza sativa; grãos; rendimento; matéria seca; área foliar; densidade radicularA field experiment was conducted to evaluate the physiological characteristics correlated to grain yield in both main and ratoon crops with the objective to establish the criteria for genotype selection in flooding irrigated rice. The experiment was arranged in a group balanced block design with four replications where the groups represented the growth cycles and the plots corresponded to the genotypes within cycles. The intermediate cycle genotypes in the ratoon crop presented the highest values for total aerial dry weight and leaf dry weight as compared to the short cycle cultivars. In the main crop, in addition to those parameters, the same genotypes presented the highest values for root dry weight, root density, leaf area index and leaf area duration. Leaf area ratio, specific leaf area, and leaf weight ratio in the main crop showed the highest at 20 days after emergence and decreased thereafter. Correlation analysis were performed among the variables studied and among those and grain yield of the main and ratoon crops. Physiological indexes of the main crop were correlated to grain yield but these correlations were not found significant for the ratoon crop.Com o objetivo de identificar e avaliar as características fisiológicas que se correlacionam com o rendimento de grãos da cultura principal e da soca para estabelecer critérios de seleção de genótipos de arroz irrigado por inundação com maior capacidade produtiva de grãos, foi conduzido um experimento em solo Gley Pouco Húmico. O delineamento experimental usado foi o de blocos balanceados em grupos, com quatro repetições, onde os grupos consistiram nos ciclos e, as parcelas, dos genótipos em cada ciclo. Na soca, os genótipos de ciclo médio apresentaram maiores valores de matéria seca total da parte aérea e de folha que os de ciclo curto e, na cultura principal, além desses parâmetros, foram superiores na matéria seca de raiz, densidade radicular, índice e duração de área foliar. Os valores de razão de área foliar, área foliar específica e razão de peso de folha da cultura principal foram mais elevados aos 20 dias após a emergência das plântulas e declinaram ao longo do ciclo. Foram realizadas correlações entre as variáveis estudadas e entre estas e o rendimento de grãos da cultura principal e da soca. Os índices fisiológicos da cultura principal correlacionaram-se com o rendimento de grãos, não apresentando, contudo, correlação significativa com o rendimento de grãos da soca.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCosta, Elisane Galbe de CarvalhoSantos, Alberto Baêta dosZimmermann, Francisco José Pfeilsticker2000-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5981Pesquisa Agropecuaria Brasileira; v.35, n.10, out. 2000; 1949-1958Pesquisa Agropecuária Brasileira; v.35, n.10, out. 2000; 1949-19581678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5981/3085info:eu-repo/semantics/openAccess2014-08-19T19:42:53Zoai:ojs.seer.sct.embrapa.br:article/5981Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-19T19:42:53Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Irrigated rice plant growth in the main crop and the ratoon
Crescimento da cultura principal e da soca de genótipos de arroz irrigado por inundação
title Irrigated rice plant growth in the main crop and the ratoon
spellingShingle Irrigated rice plant growth in the main crop and the ratoon
Costa, Elisane Galbe de Carvalho
Oryza sativa; grain; yields; dry matter; leaf area; root density
Oryza sativa; grãos; rendimento; matéria seca; área foliar; densidade radicular
title_short Irrigated rice plant growth in the main crop and the ratoon
title_full Irrigated rice plant growth in the main crop and the ratoon
title_fullStr Irrigated rice plant growth in the main crop and the ratoon
title_full_unstemmed Irrigated rice plant growth in the main crop and the ratoon
title_sort Irrigated rice plant growth in the main crop and the ratoon
author Costa, Elisane Galbe de Carvalho
author_facet Costa, Elisane Galbe de Carvalho
Santos, Alberto Baêta dos
Zimmermann, Francisco José Pfeilsticker
author_role author
author2 Santos, Alberto Baêta dos
Zimmermann, Francisco José Pfeilsticker
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Costa, Elisane Galbe de Carvalho
Santos, Alberto Baêta dos
Zimmermann, Francisco José Pfeilsticker
dc.subject.por.fl_str_mv Oryza sativa; grain; yields; dry matter; leaf area; root density
Oryza sativa; grãos; rendimento; matéria seca; área foliar; densidade radicular
topic Oryza sativa; grain; yields; dry matter; leaf area; root density
Oryza sativa; grãos; rendimento; matéria seca; área foliar; densidade radicular
description A field experiment was conducted to evaluate the physiological characteristics correlated to grain yield in both main and ratoon crops with the objective to establish the criteria for genotype selection in flooding irrigated rice. The experiment was arranged in a group balanced block design with four replications where the groups represented the growth cycles and the plots corresponded to the genotypes within cycles. The intermediate cycle genotypes in the ratoon crop presented the highest values for total aerial dry weight and leaf dry weight as compared to the short cycle cultivars. In the main crop, in addition to those parameters, the same genotypes presented the highest values for root dry weight, root density, leaf area index and leaf area duration. Leaf area ratio, specific leaf area, and leaf weight ratio in the main crop showed the highest at 20 days after emergence and decreased thereafter. Correlation analysis were performed among the variables studied and among those and grain yield of the main and ratoon crops. Physiological indexes of the main crop were correlated to grain yield but these correlations were not found significant for the ratoon crop.
publishDate 2000
dc.date.none.fl_str_mv 2000-10-01
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/5981
url https://seer.sct.embrapa.br/index.php/pab/article/view/5981
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/5981/3085
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.35, n.10, out. 2000; 1949-1958
Pesquisa Agropecuária Brasileira; v.35, n.10, out. 2000; 1949-1958
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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