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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
10/11/2021 |
Data da última atualização: |
10/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
OLIVEIRA, I. V. de; AGUIAR, R. O.; LIMA, C. C.; CUNHA, R. L.; CRUZ, W. P. da; SILVA, C. R. da; SILVA, V. F. A.; SILVA, J. P. da; CARVALHO, F. I. M.; MARTINS, L. H. da S.; SILVA, P. A.; PINHEIRO, H. A. |
Afiliação: |
IGOR V. DE OLIVEIRA, Unifesspa; RODRIGO O. AGUIAR, UFRA; CLENES C. LIMA, UFRA; ROBERTO LISBOA CUNHA, CPATU; WILTON P. DA CRUZ, UFRA; CLAUDETE R. DA SILVA, UFRA; VICENTE F. A. SILVA, UFRA; JOSIANE P. DA SILVA, UFRA; FÁBIO I. M. CARVALHO, UFRA; LUIZA H. DA S. MARTINS, UFRA; PRISCILLA A. SILVA, UFRA; HUGO A. PINHEIRO, UFRA. |
Título: |
Diurnal variations in water potential and gas exchanges in two-hybrid oil palms under water deficit. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Journal of Agricultural Science, v. 12, n. 12, p. 75-88, 2020. |
DOI: |
https://doi.org/10.5539/jas.v12n12p75 |
Idioma: |
Inglês |
Conteúdo: |
Oil palm (Elaeis guineensis Jacq.) presents considerable sensitivity to water deficit and the identification of stress-tolerant hybrids is a strategy to improve the adaptation and growth of plants throughout the annual dry seasons. For this reason, we examined possible differences in water deficit tolerance in two oil palm hybrids (BRS Manicoré and BRS C 2501) subjected to moderate drought conditions. The comparison of hybrids was performed using diurnal curves of leaf water potential (Ψw), gas exchanges, and biochemical variables, such as chloroplast pigments and enzymes analysis. The experiment was carried out in a completely randomized design, in a 2 × 2 × 13 factorial scheme resulting from the combination of two hybrids versus two water regimes, and thirteen evaluation schedules. Regardless of the water regime, the maximum average value of net assimilation rates of CO2 (A), stomatal conductance to water vapor (gs), and water use efficiency (A/E) in both hybrids was registered at 8 h. Peaks of A, gs, and A/E coincided with milder climatic conditions during the morning. While decreases in these variables were observed with increases in air temperature and vapor pressure deficit between leaf and atmosphere throughout the day. The water deficit induced significant increases in the total carotenoids levels of BRS C 2501 (62%) and BRS Manicoré (220%), while chlorophyll a content was significantly reduced only in BRS C 2501 (36%) and chlorophyll b only in Manicoré (34%). It also mediated significant increases in the activities of glycolate and catalase oxidase in both hybrids; however, such increases were more expressive in BRS C 2501 than in BRS Manicoré. In conclusion, it can be inferred that BRS Manicoré presents more favorable physiological and biochemical responses to the water deficit imposed compared to BRS C 2501. MenosOil palm (Elaeis guineensis Jacq.) presents considerable sensitivity to water deficit and the identification of stress-tolerant hybrids is a strategy to improve the adaptation and growth of plants throughout the annual dry seasons. For this reason, we examined possible differences in water deficit tolerance in two oil palm hybrids (BRS Manicoré and BRS C 2501) subjected to moderate drought conditions. The comparison of hybrids was performed using diurnal curves of leaf water potential (Ψw), gas exchanges, and biochemical variables, such as chloroplast pigments and enzymes analysis. The experiment was carried out in a completely randomized design, in a 2 × 2 × 13 factorial scheme resulting from the combination of two hybrids versus two water regimes, and thirteen evaluation schedules. Regardless of the water regime, the maximum average value of net assimilation rates of CO2 (A), stomatal conductance to water vapor (gs), and water use efficiency (A/E) in both hybrids was registered at 8 h. Peaks of A, gs, and A/E coincided with milder climatic conditions during the morning. While decreases in these variables were observed with increases in air temperature and vapor pressure deficit between leaf and atmosphere throughout the day. The water deficit induced significant increases in the total carotenoids levels of BRS C 2501 (62%) and BRS Manicoré (220%), while chlorophyll a content was significantly reduced only in BRS C 2501 (36%) and chlorophyll b only in Manicoré (34%). I... Mostrar Tudo |
Thesagro: |
Catalase; Clorofila; Dendê; Elaeis Guineensis; Fotossíntese; Potencial Hídrico. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02855naa a2200337 a 4500 001 2135989 005 2021-11-10 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.5539/jas.v12n12p75$2DOI 100 1 $aOLIVEIRA, I. V. de 245 $aDiurnal variations in water potential and gas exchanges in two-hybrid oil palms under water deficit.$h[electronic resource] 260 $c2020 520 $aOil palm (Elaeis guineensis Jacq.) presents considerable sensitivity to water deficit and the identification of stress-tolerant hybrids is a strategy to improve the adaptation and growth of plants throughout the annual dry seasons. For this reason, we examined possible differences in water deficit tolerance in two oil palm hybrids (BRS Manicoré and BRS C 2501) subjected to moderate drought conditions. The comparison of hybrids was performed using diurnal curves of leaf water potential (Ψw), gas exchanges, and biochemical variables, such as chloroplast pigments and enzymes analysis. The experiment was carried out in a completely randomized design, in a 2 × 2 × 13 factorial scheme resulting from the combination of two hybrids versus two water regimes, and thirteen evaluation schedules. Regardless of the water regime, the maximum average value of net assimilation rates of CO2 (A), stomatal conductance to water vapor (gs), and water use efficiency (A/E) in both hybrids was registered at 8 h. Peaks of A, gs, and A/E coincided with milder climatic conditions during the morning. While decreases in these variables were observed with increases in air temperature and vapor pressure deficit between leaf and atmosphere throughout the day. The water deficit induced significant increases in the total carotenoids levels of BRS C 2501 (62%) and BRS Manicoré (220%), while chlorophyll a content was significantly reduced only in BRS C 2501 (36%) and chlorophyll b only in Manicoré (34%). It also mediated significant increases in the activities of glycolate and catalase oxidase in both hybrids; however, such increases were more expressive in BRS C 2501 than in BRS Manicoré. In conclusion, it can be inferred that BRS Manicoré presents more favorable physiological and biochemical responses to the water deficit imposed compared to BRS C 2501. 650 $aCatalase 650 $aClorofila 650 $aDendê 650 $aElaeis Guineensis 650 $aFotossíntese 650 $aPotencial Hídrico 700 1 $aAGUIAR, R. O. 700 1 $aLIMA, C. C. 700 1 $aCUNHA, R. L. 700 1 $aCRUZ, W. P. da 700 1 $aSILVA, C. R. da 700 1 $aSILVA, V. F. A. 700 1 $aSILVA, J. P. da 700 1 $aCARVALHO, F. I. M. 700 1 $aMARTINS, L. H. da S. 700 1 $aSILVA, P. A. 700 1 $aPINHEIRO, H. A. 773 $tJournal of Agricultural Science$gv. 12, n. 12, p. 75-88, 2020.
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Registros recuperados : 46 | |
1. | | SILVA, C. R. da; CRESTANA, S. Modelagem SWAT do transporte espacial e temporal de nutrientes, nitrogênio e fósforo, na microbacia hidrográfica do ribeirao canchin-SP In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 4., 2012, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2012. p. 63. Editores técnicos: João de Mendonça Naime, Lucimara Aparecida Forato, Maria Alice Martins, Ladislau Marcelino Rabello, Rubens Bernardes Filho. (Embrapa Instrumentação. Documentos, 56)Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Instrumentação. |
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4. | | ANDRADE JUNIOR, A. S. de; SILVA, C. R. da; SOUZA, C. F. Calibration of Diviner 20001 capacitance probe in two soils of Piaui State, Brazil. In: THE THIRD INTERNATIONAL SYMPOSIUM ON SOIL WATER MEASUREMENT USING CAPACITANCE, IMPEDANCE AND TDT, 2010, Murcia, Spain. Transactions. Murcia, Spain: CEBAS-CSIC, 2010. v. 1. p. 1-10.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Meio-Norte. |
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5. | | FERREIRA, V. M.; ANDRADE JÚNIOR, A. S. de; SILVA, C. R. da; MASCHIO, R. Consumo relativo de água pelo milho e pelo feijão-caupi, em sistema de cultivos solteiro e consorciado. Revista Brasileira de Agrometeorologia, Santa Maria, v. 16, n. 1, p. 96-106, abr. 2008.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
Biblioteca(s): Embrapa Meio-Norte. |
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13. | | SILVA, C. R. da; KOBLITZ, M. G. B.; COSTA, A. S.; VIANA, E. de S.; OLIVEIRA, L. A. de. Otimização da extração de enzimas de Spondias spp. usando a metodologia de superfície de resposta. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 22., 2010, Salvador. Potencialidades, desafios e inovações. Salvador: sbCTA, 2010. 1 CD-ROM.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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14. | | MACHADO JÚNIOR, C. S.; SILVA, C. R. da; SANCHES, M. C.; HAMAWAKI, O. T.; SOUSA, L. B. de. Physiologic parameters of soybean of determinate and indeterminate growth habit subjected to levels of soil moisture. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 6, p. 419-425, jun. 2017. Título em português: Parâmetros fisiológicos de soja de crescimento determinado e indeterminado submetida a níveis de umidade do solo.Biblioteca(s): Embrapa Unidades Centrais. |
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18. | | MACHADO, J. S.; SILVA, C. R. da; LIMA, E. de P.; ALBANO, F. G.; PAULA, A. C. de. Monitoramento de lagoas utilizando técnicas de sensoriamento remoto. In: CONGRESSO DE ECOLOGIA DO BRASIL, 10.; SIMPÓSIO DE SUSTENTABILIDADE, 1., 2011, São Lourenço. Sustentabilidade: anais. São Paulo: Sociedade de Ecologia do Brasil, 2011. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Solos. |
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19. | | ANDRADE JÚNIOR, A. S. de; SILVA, C. R. da; DIAS, N. da S.; RODRIGUES, B. H. N.; RIBEIRO, V. Q. Response of watermelon to nitrogen fertigation. Irriga, Botucatu, v. 14, n. 2, p. 115-122, abr./jun. 2009.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
Biblioteca(s): Embrapa Meio-Norte. |
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Registros recuperados : 46 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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