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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Unidades Centrais. |
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Data corrente: |
23/09/2009 |
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Data da última atualização: |
08/06/2018 |
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Autoria: |
ANDRIOLI, K. G.; SENTELHAS, P. C. |
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Afiliação: |
Kleber Gustavo Andrioli; Paulo Cesar Sentelhas. |
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Título: |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 7, p. 653-660, jul. 2009 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Sensibilidade de genótipos brasileiros de milho ao deficit hídrico, estimada por um modelo simples de produtividade. |
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Conteúdo: |
The objective of this work was to determine the sensitivity of maize (Zea mays) genotypes to water deficit, using a simple agrometeorological crop yield model. Crop actual yield and agronomic data of 26 genotypes were obtained from the Maize National Assays carried out in ten locations, in four Brazilian states, from 1998 to 2006. Weather information for each experimental location and period were obtained from the closest weather station. Water deficit sensitivity index (Ky) was determined using the crop yield depletion model. Genotypes can be divided into two groups according to their resistance to water deficit. Normal resistance genotypes had Ky ranging from 0.4 to 0.5 in vegetative period, 1.4 to 1.5 in flowering, 0.3 to 0.6 in fruiting, and 0.1 to 0.3 in maturing period, whereas the higher resistance genotypes had lower values, respectively 0.2?0.4, 0.7?1.2, 0.2?0.4, and 0.1?0.2. The general Ky for the total growing season was 2.15 for sensitive genotypes and 1.56 for the resistant ones. Model performance was acceptable to evaluate crop actual yield, whose average errors estimated for each genotype ranged from -5.7% to +5.8%, and whose general mean absolute error was 960 kg ha-1 (10%). |
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Palavras-Chave: |
Agrometeorologia; Dados meteorológicos; Déficit hídrico; Drought resistance; Genótipos brasileiros de milho; Modelo agrometeorológico; Modelo de depleção da produtividade; Modelo de produtividade. |
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Thesagro: |
Agricultura; Balanço Hídrico; Resistência a Seca; Seca; Zea Mays. |
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Thesaurus Nal: |
Agrometeorology; Models; Water balance. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38079/1/44n07a01.pdf
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Marc: |
LEADER 02362naa a2200337 a 4500
001 1631444
005 2018-06-08
008 2009 bl uuuu u00u1 u #d
100 1 $aANDRIOLI, K. G.
245 $aBrazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model.
260 $c2009
500 $aTítulo em português: Sensibilidade de genótipos brasileiros de milho ao deficit hídrico, estimada por um modelo simples de produtividade.
520 $aThe objective of this work was to determine the sensitivity of maize (Zea mays) genotypes to water deficit, using a simple agrometeorological crop yield model. Crop actual yield and agronomic data of 26 genotypes were obtained from the Maize National Assays carried out in ten locations, in four Brazilian states, from 1998 to 2006. Weather information for each experimental location and period were obtained from the closest weather station. Water deficit sensitivity index (Ky) was determined using the crop yield depletion model. Genotypes can be divided into two groups according to their resistance to water deficit. Normal resistance genotypes had Ky ranging from 0.4 to 0.5 in vegetative period, 1.4 to 1.5 in flowering, 0.3 to 0.6 in fruiting, and 0.1 to 0.3 in maturing period, whereas the higher resistance genotypes had lower values, respectively 0.2?0.4, 0.7?1.2, 0.2?0.4, and 0.1?0.2. The general Ky for the total growing season was 2.15 for sensitive genotypes and 1.56 for the resistant ones. Model performance was acceptable to evaluate crop actual yield, whose average errors estimated for each genotype ranged from -5.7% to +5.8%, and whose general mean absolute error was 960 kg ha-1 (10%).
650 $aAgrometeorology
650 $aModels
650 $aWater balance
650 $aAgricultura
650 $aBalanço Hídrico
650 $aResistência a Seca
650 $aSeca
650 $aZea Mays
653 $aAgrometeorologia
653 $aDados meteorológicos
653 $aDéficit hídrico
653 $aDrought resistance
653 $aGenótipos brasileiros de milho
653 $aModelo agrometeorológico
653 $aModelo de depleção da produtividade
653 $aModelo de produtividade
700 1 $aSENTELHAS, P. C.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 44, n. 7, p. 653-660, jul. 2009
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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| Registros recuperados : 2 | |
| 2. |  | SOUZA, M. I. F.; OLIVEIRA, D. R. M. dos S.; MARIN, F. R.; VIAN, C. E. de F.; SOLLERO, G. C.; ANDRIOLI, K. G.; SANTOS, A. dos D.; HANASHIRO, M. M. Sugarcane, sugar and ethanol - technological information. In: INTERNATIONAL CONFERENCE AND EXHIBITION ON BIOENERGY, 2008, Guimarães, Portugal. Bioenergy: challenges and opportunities: proceedings: Guimarães, Portugal: Universidade do Minho, 2008, p. 197-202. v. 1.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| Registros recuperados : 2 | |
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