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Registro Completo |
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Biblioteca(s): |
Embrapa Soja; Embrapa Unidades Centrais. |
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Data corrente: |
27/09/2011 |
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Data da última atualização: |
31/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, P. J. de O. P. de; FARIAS, J. R. B.; ABREU, J. P. M. de M.; RIBEIRO, A.; ROCHA, E. J. P. da; BOTELHO, M. do N.; SOUSA, A. M. L. de. |
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Afiliação: |
PAULO JORGE DE OLIVEIRA PONTE DE SOUZA, Universidade Federal Rural da Amazônia; JOSE RENATO BOUCAS FARIAS, CNPSO; JOSÉ PAULO MOURÃO DE MELO E ABREU, Instituto Superior de Agronomia - Lisboa; ARISTIDES RIBEIRO, UFV; EDSON JOSÉ PAULINO DA ROCHA, Universidade Federal do Pará; MARCEL DO NASCIMENTO BOTELHO, Universidade Federal Rural da Amazônia; ADRIANO MARLISOM LEÃO DE SOUSA, Universidade Federal Rural da Amazônia. |
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Título: |
Simulation of soybean growth and yield under northeastern Amazon climatic conditions. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasília, DF, v.46, n.6, p.567-577, jun. 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to parameterize, calibrate, and validate a new version of the soybean growth and yield model developed by Sinclair, under natural field conditions in northeastern Amazon. The meteorological data and the values of soybean growth and leaf area were obtained from an agrometeorological experiment carried out in Paragominas, PA, Brazil, from 2006 to 2009. The climatic conditions during the experiment were very distinct, with a slight reduction in rainfall in 2007, due to the El Niño phenomenon. There was a reduction in the leaf area index (LAI) and in biomass production during this year, which was reproduced by the model. The simulation of the LAI had root mean square error (RMSE) of 0.55 to 0.82 m2 m-2, from 2006 to 2009. The simulation of soybean yield for independent data showed a RMSE of 198 kg ha?1, i.e., an overestimation of 3%. The model was calibrated and validated for Amazonian climatic conditions, and can contribute positively to the improvement of the simulations of the impacts of land use change in the Amazon region. The modified version of the Sinclair model is able to adequately simulate leaf area formation, total biomass, and soybean yield, under northeastern Amazon climatic conditions. Simulação do crescimento e da produtividade da soja nas condições climáticas do nordeste da Amazônia Resumo – O objetivo deste trabalho foi parametrizar, calibrar e validar uma nova versão do modelo de crescimento de produtividade da soja desenvolvido por Sinclair, em condições naturais de campo no nordeste da Amazônia. Os dados meteorológicos e os valores de crescimento e de área foliar da soja foram obtidos em um experimento agrometeorológico realizado em Paragominas, PA, de 2006 a 2009. As condições climáticas durante o experimento foram muito distintas, com uma ligeira redução na precipitação em 2007, em virtude do fenômeno El Niño. Houve redução no índice de área foliar (IAF) e na produção de biomassa neste ano, a qual foi reproduzida pelo modelo. A simulação do IAF apresentou raiz do erro quadrado médio (REQM) de 0,55 a 0,82 m2 m?2, de 2006 a 2009. A simulação da produtividade da soja para os dados independentes apresentou um REQM de 198 kg ha?1, ou seja, uma superestimativa de 3%. O modelo encontra-se calibrado e validado para as condições climáticas da Amazônia e pode contribuir positivamente para a melhoria das simulações dos impactos da mudança de uso da terra na região amazônica. A versão modificada do modelo de Sinclair simula adequadamente a formação de área foliar, a biomassa total e a produtividade da soja, nas condições climáticas do nordeste da Amazônia. MenosThe objective of this work was to parameterize, calibrate, and validate a new version of the soybean growth and yield model developed by Sinclair, under natural field conditions in northeastern Amazon. The meteorological data and the values of soybean growth and leaf area were obtained from an agrometeorological experiment carried out in Paragominas, PA, Brazil, from 2006 to 2009. The climatic conditions during the experiment were very distinct, with a slight reduction in rainfall in 2007, due to the El Niño phenomenon. There was a reduction in the leaf area index (LAI) and in biomass production during this year, which was reproduced by the model. The simulation of the LAI had root mean square error (RMSE) of 0.55 to 0.82 m2 m-2, from 2006 to 2009. The simulation of soybean yield for independent data showed a RMSE of 198 kg ha?1, i.e., an overestimation of 3%. The model was calibrated and validated for Amazonian climatic conditions, and can contribute positively to the improvement of the simulations of the impacts of land use change in the Amazon region. The modified version of the Sinclair model is able to adequately simulate leaf area formation, total biomass, and soybean yield, under northeastern Amazon climatic conditions. Simulação do crescimento e da produtividade da soja nas condições climáticas do nordeste da Amazônia Resumo – O objetivo deste trabalho foi parametrizar, calibrar e validar uma nova versão do modelo de crescimento de produtividade da soja desenvolvido ... Mostrar Tudo |
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Palavras-Chave: |
Expansão da cultura da soja; Índice de área foliar; Modelo climático; Região Amazônica; Simulação de produtividade; Soybean crop expansion; Yield simulation. |
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Thesagro: |
Clima; Climatologia; Glycine Max; Soja. |
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Thesaurus Nal: |
Amazonia; Climate models; Leaf area index; Soybeans. |
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Categoria do assunto: |
--
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42528/1/46n06a01.pdf
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Marc: |
LEADER 03781naa a2200373 a 4500
001 1904391
005 2017-10-31
008 2011 bl uuuu u00u1 u #d
100 1 $aSOUZA, P. J. de O. P. de
245 $aSimulation of soybean growth and yield under northeastern Amazon climatic conditions.
260 $c2011
520 $aThe objective of this work was to parameterize, calibrate, and validate a new version of the soybean growth and yield model developed by Sinclair, under natural field conditions in northeastern Amazon. The meteorological data and the values of soybean growth and leaf area were obtained from an agrometeorological experiment carried out in Paragominas, PA, Brazil, from 2006 to 2009. The climatic conditions during the experiment were very distinct, with a slight reduction in rainfall in 2007, due to the El Niño phenomenon. There was a reduction in the leaf area index (LAI) and in biomass production during this year, which was reproduced by the model. The simulation of the LAI had root mean square error (RMSE) of 0.55 to 0.82 m2 m-2, from 2006 to 2009. The simulation of soybean yield for independent data showed a RMSE of 198 kg ha?1, i.e., an overestimation of 3%. The model was calibrated and validated for Amazonian climatic conditions, and can contribute positively to the improvement of the simulations of the impacts of land use change in the Amazon region. The modified version of the Sinclair model is able to adequately simulate leaf area formation, total biomass, and soybean yield, under northeastern Amazon climatic conditions. Simulação do crescimento e da produtividade da soja nas condições climáticas do nordeste da Amazônia Resumo – O objetivo deste trabalho foi parametrizar, calibrar e validar uma nova versão do modelo de crescimento de produtividade da soja desenvolvido por Sinclair, em condições naturais de campo no nordeste da Amazônia. Os dados meteorológicos e os valores de crescimento e de área foliar da soja foram obtidos em um experimento agrometeorológico realizado em Paragominas, PA, de 2006 a 2009. As condições climáticas durante o experimento foram muito distintas, com uma ligeira redução na precipitação em 2007, em virtude do fenômeno El Niño. Houve redução no índice de área foliar (IAF) e na produção de biomassa neste ano, a qual foi reproduzida pelo modelo. A simulação do IAF apresentou raiz do erro quadrado médio (REQM) de 0,55 a 0,82 m2 m?2, de 2006 a 2009. A simulação da produtividade da soja para os dados independentes apresentou um REQM de 198 kg ha?1, ou seja, uma superestimativa de 3%. O modelo encontra-se calibrado e validado para as condições climáticas da Amazônia e pode contribuir positivamente para a melhoria das simulações dos impactos da mudança de uso da terra na região amazônica. A versão modificada do modelo de Sinclair simula adequadamente a formação de área foliar, a biomassa total e a produtividade da soja, nas condições climáticas do nordeste da Amazônia.
650 $aAmazonia
650 $aClimate models
650 $aLeaf area index
650 $aSoybeans
650 $aClima
650 $aClimatologia
650 $aGlycine Max
650 $aSoja
653 $aExpansão da cultura da soja
653 $aÍndice de área foliar
653 $aModelo climático
653 $aRegião Amazônica
653 $aSimulação de produtividade
653 $aSoybean crop expansion
653 $aYield simulation
700 1 $aFARIAS, J. R. B.
700 1 $aABREU, J. P. M. de M.
700 1 $aRIBEIRO, A.
700 1 $aROCHA, E. J. P. da
700 1 $aBOTELHO, M. do N.
700 1 $aSOUSA, A. M. L. de
773 $tPesquisa Agropecuaria Brasileira, Brasília, DF$gv.46, n.6, p.567-577, jun. 2011.
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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
06/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ROCHA, L. C.; MITTELMANN, A.; HOUBEN, A.; TECHIO, V. H. |
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Afiliação: |
Laiane Corsini Rocha, UFLA; ANDREA MITTELMANN, CNPGL; Andreas Houben, Leibniz Institute of Plant Genetics and Crop Plant Research, Germany; Vânia Helena Techio, UFLA. |
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Título: |
Fragile sites of 45S rDNA of Lolium multiflorum are not hotspots for chromosomal breakages induced by X-ray. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Molecular Biology Reports, v. 43, n. 7, p. 659-665, 2016. |
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Idioma: |
Português |
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Conteúdo: |
Abstract Sites of 45S rDNA of Lolium are regions denominated fragile sites (FSs), constituting regions slightly stained with DAPI due to increased DNA unpacking in metaphasic chromosomes. Considered to be fragile regions in the genome, the FSs might be more responsive to induced breaks and result in chromosomal fragments and rearrangements, unless repairing mechanisms such as recombination or de novo telomere formation play a role at the break site of the DNA. Thus, this study aimed at investigating if SFs from Lolium are hotspots for the occurrence of breakages induced by X-ray and if they are regions favorable to synthesize new telomeres, using Hordeum vulgare as a comparative model. Lolium multiflorum and H. vulgare seedlings were irradiated with 20 and 50 Gy X-ray and evaluated one day following the irradiation and at 7-days intervals for a 28-days period, using FISH technique with 45S rDNA and Arabidopsistype telomere probes in order to investigate the presence of chromosomal breakages and new telomere formation. H. vulgare did not survive after a few days of irradiation due to the increased rate of abnormalities. L. multiflorum also exhibited chromosomal abnormalities following the exposure, yet over the 28-days trial it had a decrease in the chromosomal damage rate and formation of de novo telomere has not been detected along this time. Despite being considered to be fragile regions in the genome, the 45S rDNA sites of Lolium are not hotspots to chromosomal breakages after the induction of breakages. MenosAbstract Sites of 45S rDNA of Lolium are regions denominated fragile sites (FSs), constituting regions slightly stained with DAPI due to increased DNA unpacking in metaphasic chromosomes. Considered to be fragile regions in the genome, the FSs might be more responsive to induced breaks and result in chromosomal fragments and rearrangements, unless repairing mechanisms such as recombination or de novo telomere formation play a role at the break site of the DNA. Thus, this study aimed at investigating if SFs from Lolium are hotspots for the occurrence of breakages induced by X-ray and if they are regions favorable to synthesize new telomeres, using Hordeum vulgare as a comparative model. Lolium multiflorum and H. vulgare seedlings were irradiated with 20 and 50 Gy X-ray and evaluated one day following the irradiation and at 7-days intervals for a 28-days period, using FISH technique with 45S rDNA and Arabidopsistype telomere probes in order to investigate the presence of chromosomal breakages and new telomere formation. H. vulgare did not survive after a few days of irradiation due to the increased rate of abnormalities. L. multiflorum also exhibited chromosomal abnormalities following the exposure, yet over the 28-days trial it had a decrease in the chromosomal damage rate and formation of de novo telomere has not been detected along this time. Despite being considered to be fragile regions in the genome, the 45S rDNA sites of Lolium are not hotspots to chromosomal breakages ... Mostrar Tudo |
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Palavras-Chave: |
Chromosomal abnormalities; De novo telomere formation; Ryegrass. |
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Thesaurus NAL: |
barley; DNA repair; ionizing radiation. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02226naa a2200229 a 4500
001 2062871
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aROCHA, L. C.
245 $aFragile sites of 45S rDNA of Lolium multiflorum are not hotspots for chromosomal breakages induced by X-ray.$h[electronic resource]
260 $c2016
520 $aAbstract Sites of 45S rDNA of Lolium are regions denominated fragile sites (FSs), constituting regions slightly stained with DAPI due to increased DNA unpacking in metaphasic chromosomes. Considered to be fragile regions in the genome, the FSs might be more responsive to induced breaks and result in chromosomal fragments and rearrangements, unless repairing mechanisms such as recombination or de novo telomere formation play a role at the break site of the DNA. Thus, this study aimed at investigating if SFs from Lolium are hotspots for the occurrence of breakages induced by X-ray and if they are regions favorable to synthesize new telomeres, using Hordeum vulgare as a comparative model. Lolium multiflorum and H. vulgare seedlings were irradiated with 20 and 50 Gy X-ray and evaluated one day following the irradiation and at 7-days intervals for a 28-days period, using FISH technique with 45S rDNA and Arabidopsistype telomere probes in order to investigate the presence of chromosomal breakages and new telomere formation. H. vulgare did not survive after a few days of irradiation due to the increased rate of abnormalities. L. multiflorum also exhibited chromosomal abnormalities following the exposure, yet over the 28-days trial it had a decrease in the chromosomal damage rate and formation of de novo telomere has not been detected along this time. Despite being considered to be fragile regions in the genome, the 45S rDNA sites of Lolium are not hotspots to chromosomal breakages after the induction of breakages.
650 $abarley
650 $aDNA repair
650 $aionizing radiation
653 $aChromosomal abnormalities
653 $aDe novo telomere formation
653 $aRyegrass
700 1 $aMITTELMANN, A.
700 1 $aHOUBEN, A.
700 1 $aTECHIO, V. H.
773 $tMolecular Biology Reports$gv. 43, n. 7, p. 659-665, 2016.
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