Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | |
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/2127 |
Resumo: | 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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Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield modelSensibilidade de genótipos brasileiros de milho ao deficit hídrico, estimada por um modelo simples de produtividadeZea mays; agrometeorology; drought resistance; water balanceZea mays; agrometeorologia; resistência à seca; balanço hídricoThe 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%).O objetivo deste trabalho foi determinar a sensibilidade de genótipos de milho (Zea mays) ao deficit hídrico, pelo uso de um modelo agrometeorológico simples de estimativa de produtividade. Dados de produtividade real e agronômicos de 26 genótipos foram obtidos dos Ensaios Nacionais de Milho, em dez localidades, em quatro estados brasileiros, entre 1998 e 2006. Os dados meteorológicos, para cada experimento e período, foram obtidos das estações mais próximas de cada local. O índice de sensibilidade ao deficit hídrico (Ky) dos genótipos foi determinado por meio do modelo de depleção da produtividade. Os genótipos de milho podem ser classificados em dois grupos de resistência ao deficit hídrico. Os de resistência normal tiveram Ky entre 0,4 e 0,5 no período vegetativo, 1,4 e 1,5 no florescimento, 0,3 e 0,6 na frutificação, e 0,1 e 0,3 no período de maturação, enquanto os genótipos de maior resistência tiveram, respectivamente, os seguintes valores de Ky: 0,2–0,4; 0,7–1,2; 0,2–0,4; e 0,1–0,2. Em todo o ciclo, o Ky geral foi 2,15 nos genótipos mais sensíveis, e 1,56 nos de maior resistência ao deficit hídrico. O desempenho do modelo foi aceitável para a avaliação da produtividade real, cujos erros médios estimados para cada genótipo variaram de -5,7 a +5,8%, e cujo erro absoluto médio geral foi de 960 kg ha-1 (10%).Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFUCAMPAndrioli, Kleber GustavoSentelhas, Paulo Cesar2010-11-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/2127Pesquisa Agropecuaria Brasileira; v.44, n.7, jul. 2009; 653-660Pesquisa Agropecuária Brasileira; v.44, n.7, jul. 2009; 653-6601678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/2127/5744https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2127/1520info:eu-repo/semantics/openAccess2020-09-08T14:00:21Zoai:ojs.seer.sct.embrapa.br:article/2127Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2020-09-08T14:00:21Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model Sensibilidade de genótipos brasileiros de milho ao deficit hídrico, estimada por um modelo simples de produtividade |
title |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model |
spellingShingle |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model Andrioli, Kleber Gustavo Zea mays; agrometeorology; drought resistance; water balance Zea mays; agrometeorologia; resistência à seca; balanço hídrico |
title_short |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model |
title_full |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model |
title_fullStr |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model |
title_full_unstemmed |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model |
title_sort |
Brazilian maize genotypes sensitivity to water deficit estimated through a simple crop yield model |
author |
Andrioli, Kleber Gustavo |
author_facet |
Andrioli, Kleber Gustavo Sentelhas, Paulo Cesar |
author_role |
author |
author2 |
Sentelhas, Paulo Cesar |
author2_role |
author |
dc.contributor.none.fl_str_mv |
FUCAMP |
dc.contributor.author.fl_str_mv |
Andrioli, Kleber Gustavo Sentelhas, Paulo Cesar |
dc.subject.por.fl_str_mv |
Zea mays; agrometeorology; drought resistance; water balance Zea mays; agrometeorologia; resistência à seca; balanço hídrico |
topic |
Zea mays; agrometeorology; drought resistance; water balance Zea mays; agrometeorologia; resistência à seca; balanço hídrico |
description |
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%). |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-11-18 |
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/2127 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/2127 |
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/2127/5744 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2127/1520 |
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.44, n.7, jul. 2009; 653-660 Pesquisa Agropecuária Brasileira; v.44, n.7, jul. 2009; 653-660 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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1793416656118087680 |