|
|
Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
24/09/1999 |
Data da última atualização: |
20/08/2014 |
Autoria: |
HOEFLICH, V. A. |
Afiliação: |
Pesquisador da EMBRAPA-CNPF. |
Título: |
Alocação de recursos e estabelecimento de prioridades na pesquisa agrícola. |
Ano de publicação: |
1988 |
Fonte/Imprenta: |
Curitiba: EMBRAPA-CNPF, 1988. |
Páginas: |
19 p. |
Idioma: |
Português |
Notas: |
Documento preliminar para discussão. Apresentado no Seminario Taller Sobre Identificacion, Formulacion y Gestion de Proyectos de Investigacion Agropecuaria, 1988, Santo Domingo. |
Palavras-Chave: |
Alocacao de recurso; Research institution. |
Thesagro: |
Pesquisa Agrícola. |
Thesaurus Nal: |
resource allocation. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/106760/1/AlocacaoRecurso.pdf
|
Marc: |
LEADER 00655nam a2200169 a 4500 001 1291012 005 2014-08-20 008 1988 bl uuuu u0uu1 u #d 100 1 $aHOEFLICH, V. A. 245 $aAlocação de recursos e estabelecimento de prioridades na pesquisa agrícola. 260 $aCuritiba: EMBRAPA-CNPF$c1988 300 $a19 p. 500 $aDocumento preliminar para discussão. Apresentado no Seminario Taller Sobre Identificacion, Formulacion y Gestion de Proyectos de Investigacion Agropecuaria, 1988, Santo Domingo. 650 $aresource allocation 650 $aPesquisa Agrícola 653 $aAlocacao de recurso 653 $aResearch institution
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Florestas (CNPF) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
04/12/2023 |
Data da última atualização: |
28/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
LOPES FILHO, W. R. L.; RODRIGUES, F. H. S.; FERREIRA, I. V. L.; CORREA, L. O.; CUNHA, R. L.; PINHEIRO, H. A. |
Afiliação: |
WAGNER ROMULO LIMA LOPES FILHO, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; FLAVIO HENRIQUE SANTOS RODRIGUES, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; IZABELY VITÓRIA LUCAS FERREIRA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; LORENA OLIVEIRA CORREA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; ROBERTO LISBOA CUNHA, CPATU; HUGO ALVES PINHEIRO, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA. |
Título: |
Physiological responses of young oil palm (Elaeis guineensis Jacq.) plants to repetitive water deficit events. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Industrial Crops & Products, v. 172, Article 114052, 2021. |
DOI: |
https://doi.org/10.1016/j.indcrop.2021.114052 |
Idioma: |
Inglês |
Conteúdo: |
Stomatal and non-stomatal limitations to photosynthesis and acclimation of the photosynthetic machinery to repetitive water deficit (WD) events were investigated in oil palms (Elaeis guineensis Jacq.). For this, well-watered plants (control treatment) were compared with plants subjected to one, two, and three WD events imposed by withholding irrigation until their predawn leaf water potential (Tpd) reached around -2.5 MPa. Treatment comparisons were performed over 28 days. The Tpd decreased equally between WD treatments. Decreases in net CO2 assimilation rate (A) were similar between stressed plants until day 7. In the following days, the A was higher in plants thrice stressed than in those stressed once. Stomatal conductance decreased similarly between WD treatments, but mesophyll conductance to CO2 was lower in plants subjected to a single WD. Chloroplast CO2 concentration decreased similarly between plants subjected to one and three WD events until day 14, but it was lower in the former on subsequent days. Plants subjected to a single WD event showed lower Ribulose 1,5 bisphosphate carboxylase/oxygenase (Rubisco) activity, maximum rate of electron transport (Jmax), and higher rates of photorespiration and dark respiration than other treatments. Plants subjected to one WD event also showed lower maximum quantum efficiency of photosystem II (PSII) photochemistry and PSII maximum efficiency concomitantly with higher malondialdehyde content. The results support that repetitive WD events induce the acclimation of the photosynthetic machinery in oil palm through adjustments in carboxylase Rubisco activity, Jmax, photorespiration, and respiration rates, as well as attenuating oxidative damages to PSII and membrane lipids. MenosStomatal and non-stomatal limitations to photosynthesis and acclimation of the photosynthetic machinery to repetitive water deficit (WD) events were investigated in oil palms (Elaeis guineensis Jacq.). For this, well-watered plants (control treatment) were compared with plants subjected to one, two, and three WD events imposed by withholding irrigation until their predawn leaf water potential (Tpd) reached around -2.5 MPa. Treatment comparisons were performed over 28 days. The Tpd decreased equally between WD treatments. Decreases in net CO2 assimilation rate (A) were similar between stressed plants until day 7. In the following days, the A was higher in plants thrice stressed than in those stressed once. Stomatal conductance decreased similarly between WD treatments, but mesophyll conductance to CO2 was lower in plants subjected to a single WD. Chloroplast CO2 concentration decreased similarly between plants subjected to one and three WD events until day 14, but it was lower in the former on subsequent days. Plants subjected to a single WD event showed lower Ribulose 1,5 bisphosphate carboxylase/oxygenase (Rubisco) activity, maximum rate of electron transport (Jmax), and higher rates of photorespiration and dark respiration than other treatments. Plants subjected to one WD event also showed lower maximum quantum efficiency of photosystem II (PSII) photochemistry and PSII maximum efficiency concomitantly with higher malondialdehyde content. The results support that repetitiv... Mostrar Tudo |
Thesagro: |
Água; Dendê; Elaeis Guineensis. |
Thesaurus NAL: |
Photorespiration. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02511naa a2200241 a 4500 001 2159136 005 2024-02-28 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.indcrop.2021.114052$2DOI 100 1 $aLOPES FILHO, W. R. L. 245 $aPhysiological responses of young oil palm (Elaeis guineensis Jacq.) plants to repetitive water deficit events.$h[electronic resource] 260 $c2021 520 $aStomatal and non-stomatal limitations to photosynthesis and acclimation of the photosynthetic machinery to repetitive water deficit (WD) events were investigated in oil palms (Elaeis guineensis Jacq.). For this, well-watered plants (control treatment) were compared with plants subjected to one, two, and three WD events imposed by withholding irrigation until their predawn leaf water potential (Tpd) reached around -2.5 MPa. Treatment comparisons were performed over 28 days. The Tpd decreased equally between WD treatments. Decreases in net CO2 assimilation rate (A) were similar between stressed plants until day 7. In the following days, the A was higher in plants thrice stressed than in those stressed once. Stomatal conductance decreased similarly between WD treatments, but mesophyll conductance to CO2 was lower in plants subjected to a single WD. Chloroplast CO2 concentration decreased similarly between plants subjected to one and three WD events until day 14, but it was lower in the former on subsequent days. Plants subjected to a single WD event showed lower Ribulose 1,5 bisphosphate carboxylase/oxygenase (Rubisco) activity, maximum rate of electron transport (Jmax), and higher rates of photorespiration and dark respiration than other treatments. Plants subjected to one WD event also showed lower maximum quantum efficiency of photosystem II (PSII) photochemistry and PSII maximum efficiency concomitantly with higher malondialdehyde content. The results support that repetitive WD events induce the acclimation of the photosynthetic machinery in oil palm through adjustments in carboxylase Rubisco activity, Jmax, photorespiration, and respiration rates, as well as attenuating oxidative damages to PSII and membrane lipids. 650 $aPhotorespiration 650 $aÁgua 650 $aDendê 650 $aElaeis Guineensis 700 1 $aRODRIGUES, F. H. S. 700 1 $aFERREIRA, I. V. L. 700 1 $aCORREA, L. O. 700 1 $aCUNHA, R. L. 700 1 $aPINHEIRO, H. A. 773 $tIndustrial Crops & Products$gv. 172, Article 114052, 2021.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|