| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
16/07/2010 |
|
Data da última atualização: |
11/04/2011 |
|
Autoria: |
ALMEIDA, A. N. de; LOPER, A. A.; SILVA, J. C. G. L. da; HOEFLICH, V. A. |
|
Afiliação: |
Alexandre Nascimento de Almeida; Ailson Augusto Loper; João Carlos Garzel Leodoro da Silva; Vitor Afonso Hoeflich. |
|
Título: |
Modelo estratégico do pólo moveleiro do Alto Vale do Rio Negro sob os conceitos de Porter. |
|
Ano de publicação: |
2009 |
|
Fonte/Imprenta: |
Scientia Forestalis, Piracicaba, v. 37, n. 83, p. 233-242, set. 2009. |
|
Idioma: |
Português |
|
Conteúdo: |
O pólo moveleiro do Alto Vale do Rio Negro é o maior exportador do país e atualmente vem sendo afetado com a valorização do real e o crescimento da China no mercado externo. O objetivo desta pesquisa foi o de analisar a percepção dos empresários quanto às estratégias genéricas de Porter. Para tanto foi analisado
o grau de importância de 24 variáveis representativas das estratégias de Diferenciação, Baixo Custo e Foco. Através do teste não paramétrico de Mann-Whitney foi identificada uma igualdade de importância entre as estratégias de Baixo Custo e Diferenciação o que, em geral, Porter considera como uma orientação
estratégica pobre. |
|
Palavras-Chave: |
Estratégia; Internacional; Porter. |
|
Thesagro: |
Mercado; Móvel. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01283naa a2200217 a 4500
001 1857921
005 2011-04-11
008 2009 bl uuuu u00u1 u #d
100 1 $aALMEIDA, A. N. de
245 $aModelo estratégico do pólo moveleiro do Alto Vale do Rio Negro sob os conceitos de Porter.
260 $c2009
520 $aO pólo moveleiro do Alto Vale do Rio Negro é o maior exportador do país e atualmente vem sendo afetado com a valorização do real e o crescimento da China no mercado externo. O objetivo desta pesquisa foi o de analisar a percepção dos empresários quanto às estratégias genéricas de Porter. Para tanto foi analisado o grau de importância de 24 variáveis representativas das estratégias de Diferenciação, Baixo Custo e Foco. Através do teste não paramétrico de Mann-Whitney foi identificada uma igualdade de importância entre as estratégias de Baixo Custo e Diferenciação o que, em geral, Porter considera como uma orientação estratégica pobre.
650 $aMercado
650 $aMóvel
653 $aEstratégia
653 $aInternacional
653 $aPorter
700 1 $aLOPER, A. A.
700 1 $aSILVA, J. C. G. L. da
700 1 $aHOEFLICH, V. A.
773 $tScientia Forestalis, Piracicaba$gv. 37, n. 83, p. 233-242, set. 2009.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
29/08/2019 |
|
Data da última atualização: |
24/01/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
REIS, C. O. dos; MAGALHAES, P. C.; AVILA, R. G.; ALMEIDA, L. G.; RABELO, V. M.; CARVALHO, D. T.; CABRAL, D. F.; KARAM, D.; SOUZA, T. C. de. |
|
Afiliação: |
Caroline Oliveira dos Reis, Universidade Federal de Alfenas; PAULO CESAR MAGALHAES, CNPMS; Roniel Geraldo Avila, Universidade Federal de Lavras; Lorena Gabriela Almeida, Universidade Federal de Lavras; Valquíria Mikaela Rabelo, Universidade Federal de Alfenas; Diogo Teixeira Carvalho, Universidade Federal de Alfenas; Daniela Ferreira Cabral, Universidade Federal de Alfenas; DECIO KARAM, CNPMS; Thiago Correa de Souza, Universidade Federal de Alfenas. |
|
Título: |
Action of N-succinyl and N,O-dicarboxymethyl chitosan derivatives on chlorophyll photosynthesis and fluorescence in drought-sensitive maize. |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Journal of Plant Growth Regulation, v. 38, p. 619-630, 2019. |
|
DOI: |
10.1007/s00344-018-9877-9 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Chitosan induces plant tolerance to various abiotic stresses, including water deficit. However, its use may be limited, due to its constitution and low solubility in water. Thus, chemical modifications were proposed in this study with the objective of potentializing its biological effects in maize plants. The derivatives were semi-synthesized (N-succinyl and N,O-dicarboxymethyl) and, together with chitosan, they were applied, via the leaf, in a drought-sensitive maize hybrid (BRS1030) under pre-flowering water deficit. The water deficit was maintained for 15 days and the analyses were performed at the beginning and end of stress, and also in rehydration. Leaf water potential, gas exchange, chlorophyll fluorescence, and content of chloroplastidic pigments were evaluated. The use of the derivatives modulated photosynthesis parameters, affecting the involved mechanisms, such as stomatal activity, water use efficiency and photosystem II activity. Chlorophyll fluorescence indicated that the antenna complex was damaged by the water deficit condition, with a decrease in the energy flux in the electron transport chain and in the photochemical phase of photosynthesis. However, the spraying of chitosan derivatives induced tolerance to water deficit, suggesting that chitosan derivatives are more bioavailable to plants. Water stress decreases pigment content, but both the application of chitosan and derivatives increased these contents. It is concluded that chitosan derivatives improved the photosynthetic parameters in maize susceptible to drought, inducing tolerance to this stress, and the possible reasons and consequences are discussed. MenosChitosan induces plant tolerance to various abiotic stresses, including water deficit. However, its use may be limited, due to its constitution and low solubility in water. Thus, chemical modifications were proposed in this study with the objective of potentializing its biological effects in maize plants. The derivatives were semi-synthesized (N-succinyl and N,O-dicarboxymethyl) and, together with chitosan, they were applied, via the leaf, in a drought-sensitive maize hybrid (BRS1030) under pre-flowering water deficit. The water deficit was maintained for 15 days and the analyses were performed at the beginning and end of stress, and also in rehydration. Leaf water potential, gas exchange, chlorophyll fluorescence, and content of chloroplastidic pigments were evaluated. The use of the derivatives modulated photosynthesis parameters, affecting the involved mechanisms, such as stomatal activity, water use efficiency and photosystem II activity. Chlorophyll fluorescence indicated that the antenna complex was damaged by the water deficit condition, with a decrease in the energy flux in the electron transport chain and in the photochemical phase of photosynthesis. However, the spraying of chitosan derivatives induced tolerance to water deficit, suggesting that chitosan derivatives are more bioavailable to plants. Water stress decreases pigment content, but both the application of chitosan and derivatives increased these contents. It is concluded that chitosan derivatives improved... Mostrar Tudo |
|
Palavras-Chave: |
Bioestimulante; Déficit hídrico; Potencial hídrico foliar; Trocas gasosas. |
|
Thesagro: |
Milho. |
|
Categoria do assunto: |
S Ciências Biológicas |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/201386/1/Action-N-succinyl.pdf
|
|
Marc: |
LEADER 02553naa a2200289 a 4500
001 2111698
005 2020-01-24
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1007/s00344-018-9877-9$2DOI
100 1 $aREIS, C. O. dos
245 $aAction of N-succinyl and N,O-dicarboxymethyl chitosan derivatives on chlorophyll photosynthesis and fluorescence in drought-sensitive maize.$h[electronic resource]
260 $c2019
520 $aChitosan induces plant tolerance to various abiotic stresses, including water deficit. However, its use may be limited, due to its constitution and low solubility in water. Thus, chemical modifications were proposed in this study with the objective of potentializing its biological effects in maize plants. The derivatives were semi-synthesized (N-succinyl and N,O-dicarboxymethyl) and, together with chitosan, they were applied, via the leaf, in a drought-sensitive maize hybrid (BRS1030) under pre-flowering water deficit. The water deficit was maintained for 15 days and the analyses were performed at the beginning and end of stress, and also in rehydration. Leaf water potential, gas exchange, chlorophyll fluorescence, and content of chloroplastidic pigments were evaluated. The use of the derivatives modulated photosynthesis parameters, affecting the involved mechanisms, such as stomatal activity, water use efficiency and photosystem II activity. Chlorophyll fluorescence indicated that the antenna complex was damaged by the water deficit condition, with a decrease in the energy flux in the electron transport chain and in the photochemical phase of photosynthesis. However, the spraying of chitosan derivatives induced tolerance to water deficit, suggesting that chitosan derivatives are more bioavailable to plants. Water stress decreases pigment content, but both the application of chitosan and derivatives increased these contents. It is concluded that chitosan derivatives improved the photosynthetic parameters in maize susceptible to drought, inducing tolerance to this stress, and the possible reasons and consequences are discussed.
650 $aMilho
653 $aBioestimulante
653 $aDéficit hídrico
653 $aPotencial hídrico foliar
653 $aTrocas gasosas
700 1 $aMAGALHAES, P. C.
700 1 $aAVILA, R. G.
700 1 $aALMEIDA, L. G.
700 1 $aRABELO, V. M.
700 1 $aCARVALHO, D. T.
700 1 $aCABRAL, D. F.
700 1 $aKARAM, D.
700 1 $aSOUZA, T. C. de
773 $tJournal of Plant Growth Regulation$gv. 38, p. 619-630, 2019.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
