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Registro Completo |
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Biblioteca(s): |
Embrapa Soja; Embrapa Unidades Centrais. |
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Data corrente: |
16/09/2010 |
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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: |
RAKOCEVIC, M.; NEUMAIER, N.; OLIVEIRA, G. M. de; NEPOMUCENO, A. L.; FARIAS, J. R. B. |
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Afiliação: |
MIROSLAVA RAKOCEVIC, IAPAR; NORMAN NEUMAIER, CNPSO; GUSTAVO MIGLIORINI DE OLIVEIRA, UEL; ALEXANDRE LIMA NEPOMUCENO, CNPSO; JOSE RENATO BOUCAS FARIAS, CNPSO. |
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Título: |
Heliotropic responses of soybean cultivars at three phenological stages and under two water regimes. |
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Título original: |
Respostas heliotrópicas de cultivares de soja em três estádios fenológicos e dois regimes hídricos. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 7, p. 661-670, jul. 2010. |
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DOI: |
10.1590/S0100-204X2010000700005 |
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Idioma: |
Inglês |
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Conteúdo: |
The objectives of this work were to determine the heliotropic movements of the upper trifoliates for two soybean cultivars, BR 16 and Embrapa 48, during a daily cycle, in three phenological stages and two water regimes, and to estimate the impact of irrigation and daily leaflet movements on agronomic characteristics and grain yield. Heliotropic movements were studied in three phenological stages: V4?V6, V7?V10, and R5 in irrigated and non-irrigated plots. For each stage, the leaflet elevation and azimuth were measured hourly. Under a low (V4?V6 stage) and mid (V7?V10 stage) leaf area index (LAI) the diaheliotropism was slightly more frequent and intensive in non-irrigated than in irrigated plants, only at early morning and late afternoon hours. At R5 stage (high LAI) the paraheliotropism of superior trifoliates was predominant and more intensive in non-irrigated plants. The heliotropic movements are correlated to carbon gain, but not to environment (light intensity or temperature), for measurements at 11h. 'Embrapa 48' expresses greater paraheliotropism than 'BR 16' at high LAI, while 'BR 16' displays lower heliotropic plasticity under irrigation. In spite of significant heliotropic differences, genotype and water availability treatments did not influence the final grain yield. |
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Palavras-Chave: |
Cosseno; Diaheliotropism; Diaheliotropismo; Indice de área foliar; Paraheliotropism; Paraheliotropismo. |
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Thesagro: |
Fisiologia vegetal; Glycine Max; Irrigação; Soja. |
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Thesaurus Nal: |
Irrigation; Leaf area index; Plant physiology; Soybeans. |
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Categoria do assunto: |
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F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30390/1/Mirolasva-Pesq.-agropec.-bras.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/105845/1/Heliotropic-responses.pdf
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Marc: |
LEADER 02436naa a2200361 a 4500
001 1862465
005 2017-10-31
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1590/S0100-204X2010000700005$2DOI
100 1 $aRAKOCEVIC, M.
240 $aRespostas heliotrópicas de cultivares de soja em três estádios fenológicos e dois regimes hídricos.
245 $aHeliotropic responses of soybean cultivars at three phenological stages and under two water regimes.
260 $c2010
520 $aThe objectives of this work were to determine the heliotropic movements of the upper trifoliates for two soybean cultivars, BR 16 and Embrapa 48, during a daily cycle, in three phenological stages and two water regimes, and to estimate the impact of irrigation and daily leaflet movements on agronomic characteristics and grain yield. Heliotropic movements were studied in three phenological stages: V4?V6, V7?V10, and R5 in irrigated and non-irrigated plots. For each stage, the leaflet elevation and azimuth were measured hourly. Under a low (V4?V6 stage) and mid (V7?V10 stage) leaf area index (LAI) the diaheliotropism was slightly more frequent and intensive in non-irrigated than in irrigated plants, only at early morning and late afternoon hours. At R5 stage (high LAI) the paraheliotropism of superior trifoliates was predominant and more intensive in non-irrigated plants. The heliotropic movements are correlated to carbon gain, but not to environment (light intensity or temperature), for measurements at 11h. 'Embrapa 48' expresses greater paraheliotropism than 'BR 16' at high LAI, while 'BR 16' displays lower heliotropic plasticity under irrigation. In spite of significant heliotropic differences, genotype and water availability treatments did not influence the final grain yield.
650 $aIrrigation
650 $aLeaf area index
650 $aPlant physiology
650 $aSoybeans
650 $aFisiologia vegetal
650 $aGlycine Max
650 $aIrrigação
650 $aSoja
653 $aCosseno
653 $aDiaheliotropism
653 $aDiaheliotropismo
653 $aIndice de área foliar
653 $aParaheliotropism
653 $aParaheliotropismo
700 1 $aNEUMAIER, N.
700 1 $aOLIVEIRA, G. M. de
700 1 $aNEPOMUCENO, A. L.
700 1 $aFARIAS, J. R. B.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 45, n. 7, p. 661-670, jul. 2010.
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Registro original: |
Embrapa Soja (CNPSO) |
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| 1. |  | RAKOCEVIC, M.; NEUMAIER, N.; OLIVEIRA, G. M. de; NEPOMUCENO, A. L.; FARIAS, J. R. B. Heliotropic responses of soybean cultivars at three phenological stages and under two water regimes. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 7, p. 661-670, jul. 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Soja; Embrapa Unidades Centrais. |
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| Registros recuperados : 1 | |
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