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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo; Embrapa Unidades Centrais. |
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Data corrente: |
17/11/2017 |
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Data da última atualização: |
17/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PINTO, D. G.; FONTANA, D. C.; DALMAGO, G. A.; FOCHESATTO, E.; VICARI, M. B.; BREMM, C.; CUNHA, G. R. da; GOUVEA, J. A. de; SANTI, A. |
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Afiliação: |
Daniele Gutterres Pinto, Departamento de Plantas Forrageiras e Agrometeorologia/Universidade Federal do Rio Grande do Sul; Denise Cybis Fontana, Departamento de Plantas Forrageiras e Agrometeorologia/Universidade Federal do Rio Grande do Sul; GENEI ANTONIO DALMAGO, CNPT; Elizandro Fochesatto, Departamento de Agronomia/Faculdades Integradas do Vale do Iguaçu; Matheus Boni Vicari, Department of Geography/University College London; Carolina Bremm, Fundação Estadual de Pesquisa Agropecuária - Sede/Divisão de Pesquisa e Inovação Tecnológica; GILBERTO ROCCA DA CUNHA, CNPT; JORGE ALBERTO DE GOUVEA, CNPT; ANDERSON SANTI, CNPT. |
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Título: |
Correlations between spectral and biophysical data obtained in canola canopy cultivated in the subtropical region of Brazil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 10, p. 825-832, out. 2017. |
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Idioma: |
Inglês |
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Notas: |
Título em português Correlações entre dados espectrais e biofísicos em dossel de canola cultivada na região subtropical do Brasil. |
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Conteúdo: |
The objective of this work was to identify the spectral bands, vegetation indices, and periods of the canola crop season in which the correlation between spectral data and biophysical indicators (total shoot dry matter and grain yield) is most significant. The experiment was carried out during the 2013 and 2014 crop seasons at Embrapa Trigo, in the state of Rio Grande do Sul, Brazil. A randomized complete block design was used, with four replicates, and the treatments consisted of five doses of nitrogen topdressing. Plant dry matter, grain yield, and phenology were measured. The canola spectral response was evaluated by measuring the canola canopy reflectance using a spectroradiometer, and, with this data, the SR, NDVI, EVI, SAVI, and GNDVI vegetation indices were determined. Pearson?s correlations between the spectral and biophysical variables of canola showed that the red (620 to 670 nm) and near-infrared (841 to 876 nm) bands were the best to estimate the dry matter. The vegetative period is the most indicated to obtain the most significant correlations for canola. All the used vegetation indices are adequate for estimating the dry matter and grain yield of canola. |
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Palavras-Chave: |
Espectrorradiometria; EVI; GNDVI; NDVI; SAVI; Spectroradiometry. |
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Thesagro: |
Brassica Napus. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/166910/1/Correlations-between-spectral.pdf
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Marc: |
LEADER 02198naa a2200313 a 4500
001 2084435
005 2021-08-17
008 2017 bl uuuu u00u1 u #d
100 1 $aPINTO, D. G.
245 $aCorrelations between spectral and biophysical data obtained in canola canopy cultivated in the subtropical region of Brazil.
260 $c2017
500 $aTítulo em português Correlações entre dados espectrais e biofísicos em dossel de canola cultivada na região subtropical do Brasil.
520 $aThe objective of this work was to identify the spectral bands, vegetation indices, and periods of the canola crop season in which the correlation between spectral data and biophysical indicators (total shoot dry matter and grain yield) is most significant. The experiment was carried out during the 2013 and 2014 crop seasons at Embrapa Trigo, in the state of Rio Grande do Sul, Brazil. A randomized complete block design was used, with four replicates, and the treatments consisted of five doses of nitrogen topdressing. Plant dry matter, grain yield, and phenology were measured. The canola spectral response was evaluated by measuring the canola canopy reflectance using a spectroradiometer, and, with this data, the SR, NDVI, EVI, SAVI, and GNDVI vegetation indices were determined. Pearson?s correlations between the spectral and biophysical variables of canola showed that the red (620 to 670 nm) and near-infrared (841 to 876 nm) bands were the best to estimate the dry matter. The vegetative period is the most indicated to obtain the most significant correlations for canola. All the used vegetation indices are adequate for estimating the dry matter and grain yield of canola.
650 $aBrassica Napus
653 $aEspectrorradiometria
653 $aEVI
653 $aGNDVI
653 $aNDVI
653 $aSAVI
653 $aSpectroradiometry
700 1 $aFONTANA, D. C.
700 1 $aDALMAGO, G. A.
700 1 $aFOCHESATTO, E.
700 1 $aVICARI, M. B.
700 1 $aBREMM, C.
700 1 $aCUNHA, G. R. da
700 1 $aGOUVEA, J. A. de
700 1 $aSANTI, A.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 52, n. 10, p. 825-832, out. 2017.
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Registro original: |
Embrapa Trigo (CNPT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
05/11/2019 |
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Data da última atualização: |
24/01/2020 |
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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: |
CASARI, R. A.; PAIVA, D. S.; SILVA, V. N. B.; FERREIRA, T. M. M.; SOUZA JUNIOR, M. T.; OLIVEIRA, N. G.; KOBAYASHI, A. K.; MOLINARI, H. B. C.; SANTOS, T. T.; GOMIDE, R. L.; MAGALHAES, P. C.; SOUSA, C. A. F. de. |
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Afiliação: |
Raphael A. C. N. Casari; Dayane S. Paiva; Vivianny N. B. Silva, Universidade Federal de Lavras; Thalita M. M. Ferreira, Universidade Federal de Lavras; MANOEL TEIXEIRA SOUZA JUNIOR, CNPAE; Nelson G. Oliveira, Universidade Federal de Lavras; Adilson K. Kobayashi; HUGO BRUNO CORREA MOLINARI, CNPAE; THIAGO TEIXEIRA SANTOS, CNPTIA; Reinaldo Lucio Gomide, Pesquisador aposentado- CNPMS; PAULO CESAR MAGALHAES, CNPMS; CARLOS ANTONIO FERREIRA DE SOUSA, CPAMN. |
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Título: |
Using thermography to confirm genotypic variation for drought response in maize. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
International Journal of Molecular Sciences, v. 20, n. 9, article 2273, 2019. |
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DOI: |
10.3390/ijms20092273 |
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Idioma: |
Inglês |
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Conteúdo: |
The feasibility of thermography as a technique for plant screening aiming at drought-tolerance has been proven by its relationship with gas exchange, biomass, and yield. In this study, unlike most of the previous, thermography was applied for phenotyping contrasting maize genotypes whose classification for drought tolerance had already been established in the field. Our objective was to determine whether thermography-based classification would discriminate the maize genotypes in a similar way as the field selection in which just grain yield was taken into account as a criterion. We evaluated gas exchange, daily water consumption, leaf relative water content, aboveground biomass, and grain yield. Indeed, the screening of maize genotypes based on canopy temperature showed similar results to traditional methods. Nevertheless, canopy temperature only partially reflected gas exchange rates and daily water consumption in plants under drought. Part of the explanation may lie in the changes that drought had caused in plant leaves and canopy structure, altering absorption and dissipation of energy, photosynthesis, transpiration, and partitioning rates. Accordingly, although there was a negative relationship between grain yield and plant canopy temperature, it does not necessarily mean that plants whose canopies were maintained cooler under drought achieved the highest yield. |
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Palavras-Chave: |
Déficit de água; Estresse abiótico; Fenotipagem de plantas; Imagem térmica; Temperatura do dossel. |
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Thesagro: |
Zea Mays. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/197552/1/Artigo-termografia.pdf
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Marc: |
LEADER 02397naa a2200337 a 4500
001 2113899
005 2020-01-24
008 2019 bl uuuu u00u1 u #d
024 7 $a10.3390/ijms20092273$2DOI
100 1 $aCASARI, R. A.
245 $aUsing thermography to confirm genotypic variation for drought response in maize.$h[electronic resource]
260 $c2019
520 $aThe feasibility of thermography as a technique for plant screening aiming at drought-tolerance has been proven by its relationship with gas exchange, biomass, and yield. In this study, unlike most of the previous, thermography was applied for phenotyping contrasting maize genotypes whose classification for drought tolerance had already been established in the field. Our objective was to determine whether thermography-based classification would discriminate the maize genotypes in a similar way as the field selection in which just grain yield was taken into account as a criterion. We evaluated gas exchange, daily water consumption, leaf relative water content, aboveground biomass, and grain yield. Indeed, the screening of maize genotypes based on canopy temperature showed similar results to traditional methods. Nevertheless, canopy temperature only partially reflected gas exchange rates and daily water consumption in plants under drought. Part of the explanation may lie in the changes that drought had caused in plant leaves and canopy structure, altering absorption and dissipation of energy, photosynthesis, transpiration, and partitioning rates. Accordingly, although there was a negative relationship between grain yield and plant canopy temperature, it does not necessarily mean that plants whose canopies were maintained cooler under drought achieved the highest yield.
650 $aZea Mays
653 $aDéficit de água
653 $aEstresse abiótico
653 $aFenotipagem de plantas
653 $aImagem térmica
653 $aTemperatura do dossel
700 1 $aPAIVA, D. S.
700 1 $aSILVA, V. N. B.
700 1 $aFERREIRA, T. M. M.
700 1 $aSOUZA JUNIOR, M. T.
700 1 $aOLIVEIRA, N. G.
700 1 $aKOBAYASHI, A. K.
700 1 $aMOLINARI, H. B. C.
700 1 $aSANTOS, T. T.
700 1 $aGOMIDE, R. L.
700 1 $aMAGALHAES, P. C.
700 1 $aSOUSA, C. A. F. de
773 $tInternational Journal of Molecular Sciences$gv. 20, n. 9, article 2273, 2019.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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