Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield

Detalhes bibliográficos
Autor(a) principal: Abichequer, André Dabdab
Data de Publicação: 2008
Outros Autores: Bohnen, Humberto
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Gaúcha (Online)
Texto Completo: http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/222
Resumo: The development of more efficient genotypes in nutrient uptake is one of the factors that can result in yield increases in paddy rice (Oriza sativa L.), besides lowering fertilizer need, by reducing nutrient losses and improving nutrient use. Nutrient uptake efficiency can be related to root morphology and distribution in soil. A field experiment was conducted in a Gleissolo, in Cachoeirinha (RS – Brazil), to compare genotypes of different plant types: IRGA 417 (modern), EEA 406 (traditional), Avaxi (hybrid, modern) and Bluebelle (american) in relation to root density, root surface area and root radio, nutrient uptake (P and K) and grain yield. Root distribution (depth 0 to 5, 5 to 20, 20 to 30 and 30 to 40 cm) was sampled by monolith method. Genotypes differed in root morphology and distribution, with ‘Avaxi’ and ‘EEA 406’ having higher root density and a more superficial distribution, especially ‘Avaxi’. Modern genotypes (IRGA 417 and Avaxi) had greater grain yield. Genotypes differed in nutrient uptake only by K uptake on mature grain stage, when ‘IRGA 417’ and ‘Avaxi’ had greater uptake than ‘EEA 406’. There was no relationship between root morphology and distribution in soil with nutrient uptake and grain yield.
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spelling Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yieldMorfologia e distribuição de raízes de arroz irrigado por inundação e sua relação com a absorção de nutrientes e o rendimento de grãosroot density, root architechture, plant nutrition, Oriza sativa L.densidade de raízes, arquitetura de raízes, nutrição vegetal, Oryza sativa L.The development of more efficient genotypes in nutrient uptake is one of the factors that can result in yield increases in paddy rice (Oriza sativa L.), besides lowering fertilizer need, by reducing nutrient losses and improving nutrient use. Nutrient uptake efficiency can be related to root morphology and distribution in soil. A field experiment was conducted in a Gleissolo, in Cachoeirinha (RS – Brazil), to compare genotypes of different plant types: IRGA 417 (modern), EEA 406 (traditional), Avaxi (hybrid, modern) and Bluebelle (american) in relation to root density, root surface area and root radio, nutrient uptake (P and K) and grain yield. Root distribution (depth 0 to 5, 5 to 20, 20 to 30 and 30 to 40 cm) was sampled by monolith method. Genotypes differed in root morphology and distribution, with ‘Avaxi’ and ‘EEA 406’ having higher root density and a more superficial distribution, especially ‘Avaxi’. Modern genotypes (IRGA 417 and Avaxi) had greater grain yield. Genotypes differed in nutrient uptake only by K uptake on mature grain stage, when ‘IRGA 417’ and ‘Avaxi’ had greater uptake than ‘EEA 406’. There was no relationship between root morphology and distribution in soil with nutrient uptake and grain yield. O desenvolvimento de genótipos mais eficientes na absorção dos nutrientes é um dos fatores que pode levar ao aumento do rendimento do arroz irrigado por inundação (Oryza sativa L.), além de reduzir a necessidade de adubação, pela diminuição das perdas e melhor aproveitamento dos nutrientes. A eficiência de absorção de nutrientes pode estar relacionada com a morfologia e a distribuição do sistema radicular no solo. Conduziu-se um experimento de campo, num Gleissolo, em Cachoeirinha (RS), comparando-se genótipos de diferentes tipos de planta: IRGA 417 (moderno), EEA 406 (tradicional), Avaxi (híbrido, moderno) e Bluebelle (americano), quanto à densidade de raízes, área superficial e raio médio das raízes, absorção de nutrientes (P e K) e rendimento de grãos. A distribuição das raízes nas profundidades de 0 a 5, 5 a 20, 20 a 30 e 30 a 40 cm foi avaliada pelo método do monólito. Os genótipos diferenciaram-se quanto à morfologia e à distribuição das raízes, com ‘Avaxi’ e ‘EEA 406’ apresentando maior densidade de raízes e distribuição mais superficial, especialmente ‘Avaxi’. Os genótipos modernos (IRGA 417 e Avaxi) apresentaram maior rendimento de grãos. Os genótipos diferenciaram- se, apenas, quanto à absorção de K na maturação, sendo que ‘IRGA 417’ e ‘Avaxi’ absorveram maior quantidade do que ‘EEA 406’. Não foi observada a relação da morfologia e distribuição das raízes no solo com absorção de nutrientes e rendimento de grãos.Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural2008-08-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/222Pesquisa Agropecuária Gaúcha; Vol 14 No 1 (2008): PESQ. AGROP. GAÚCHA; 13-20Pesquisa Agropecuária Gaúcha; v. 14 n. 1 (2008): PESQ. AGROP. GAÚCHA; 13-202595-76860104-9070reponame:Pesquisa Agropecuária Gaúcha (Online)instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulinstacron:SEAPDRporhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/222/185Abichequer, André Dabdab Bohnen, Humberto info:eu-repo/semantics/openAccess2024-04-22T12:37:50Zoai:ojs.revistapag.agricultura.rs.gov.br:article/222Revistahttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapagPUBhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/oaipag@agricultura.rs.gov.br||2595-76860104-9070opendoar:2024-04-22T12:37:50Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse
dc.title.none.fl_str_mv Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
Morfologia e distribuição de raízes de arroz irrigado por inundação e sua relação com a absorção de nutrientes e o rendimento de grãos
title Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
spellingShingle Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
Abichequer, André Dabdab
root density, root architechture, plant nutrition, Oriza sativa L.
densidade de raízes, arquitetura de raízes, nutrição vegetal, Oryza sativa L.
title_short Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
title_full Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
title_fullStr Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
title_full_unstemmed Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
title_sort Root morphology and distribution of paddy rice and their relationship with nutrient uptake and grain yield
author Abichequer, André Dabdab
author_facet Abichequer, André Dabdab
Bohnen, Humberto
author_role author
author2 Bohnen, Humberto
author2_role author
dc.contributor.author.fl_str_mv Abichequer, André Dabdab
Bohnen, Humberto
dc.subject.por.fl_str_mv root density, root architechture, plant nutrition, Oriza sativa L.
densidade de raízes, arquitetura de raízes, nutrição vegetal, Oryza sativa L.
topic root density, root architechture, plant nutrition, Oriza sativa L.
densidade de raízes, arquitetura de raízes, nutrição vegetal, Oryza sativa L.
description The development of more efficient genotypes in nutrient uptake is one of the factors that can result in yield increases in paddy rice (Oriza sativa L.), besides lowering fertilizer need, by reducing nutrient losses and improving nutrient use. Nutrient uptake efficiency can be related to root morphology and distribution in soil. A field experiment was conducted in a Gleissolo, in Cachoeirinha (RS – Brazil), to compare genotypes of different plant types: IRGA 417 (modern), EEA 406 (traditional), Avaxi (hybrid, modern) and Bluebelle (american) in relation to root density, root surface area and root radio, nutrient uptake (P and K) and grain yield. Root distribution (depth 0 to 5, 5 to 20, 20 to 30 and 30 to 40 cm) was sampled by monolith method. Genotypes differed in root morphology and distribution, with ‘Avaxi’ and ‘EEA 406’ having higher root density and a more superficial distribution, especially ‘Avaxi’. Modern genotypes (IRGA 417 and Avaxi) had greater grain yield. Genotypes differed in nutrient uptake only by K uptake on mature grain stage, when ‘IRGA 417’ and ‘Avaxi’ had greater uptake than ‘EEA 406’. There was no relationship between root morphology and distribution in soil with nutrient uptake and grain yield.
publishDate 2008
dc.date.none.fl_str_mv 2008-08-10
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 http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/222
url http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/222
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/222/185
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 Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural
publisher.none.fl_str_mv Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural
dc.source.none.fl_str_mv Pesquisa Agropecuária Gaúcha; Vol 14 No 1 (2008): PESQ. AGROP. GAÚCHA; 13-20
Pesquisa Agropecuária Gaúcha; v. 14 n. 1 (2008): PESQ. AGROP. GAÚCHA; 13-20
2595-7686
0104-9070
reponame:Pesquisa Agropecuária Gaúcha (Online)
instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
instacron:SEAPDR
instname_str Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
instacron_str SEAPDR
institution SEAPDR
reponame_str Pesquisa Agropecuária Gaúcha (Online)
collection Pesquisa Agropecuária Gaúcha (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul
repository.mail.fl_str_mv pag@agricultura.rs.gov.br||
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