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| Registros recuperados : 25 | |
| 1. |  | ANDRADE, S. F.; ROSADO, P. L.; PIRES, M. DE M.; GOMES, A. da S.; MIDLEJ, M. B. C. Análise dos preços da borracha natural no Brasil e no Mercado Extemo, 1998-2009. Agrotrópica, Ilhéus, BA, v. 23, n. 1, p. 5-20, jan./abr. 2011.| Biblioteca(s): Epagri-Sede. |
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| 2. | | BAMBERG, A. L.; PAULETTO, E. A.; GOMES, A. da S.; TIMM, L. C.; PINTO, L. F. S.; LIMA, A. C. R. de; SILVA, T. R. da. Densidade de um planossolo sob sistemas de cultivo avaliada por meio da tomografia computadorizada de raios gama. Revista Brasileira de Ciência do Solo, Viçosa, MG, v 33, n. 5, p. 1079-1086, 2009.| Biblioteca(s): Epagri-Sede. |
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| 3. | | BORGES, J.R.; PAULETTO, E.A.; SOUSA, R.O.de; GOMES, A. da S.; SILVA, J.B.da; LEITZKE, V.W. Agregacao de um gleissolo submetido a sistemas de cultivo e culturas. Revista Brasileira de Agrociencia, Pelotas,RS, v.9, n.4, p.389-395, out./dez. 2003.| Biblioteca(s): Epagri-Sede. |
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| 9. | | GOMES, A. da S.; FERREIRA, L.H.G.; MARTINS, E.; CAPILHEIRA, A. Densidade de semeadura em arroz irrigado: cultivares BRS 7 Taim e BRS 6 Chui. In: CONGRESSO DA CADEIA PRODUTIVA DE ARROZ, 1.; REUNIAO NACIONAL DE PESQUISA DE ARROZ-RENAPA, 7., 2002, Florianopolis, SC. Anais... Santo Antonio de Goias: Embrapa Arroz e Feijao, 2002. p.333-335.| Biblioteca(s): Epagri-Sede. |
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| 10. | | GOMES, A. da S.; MACHADO, G.B.; SILVA, R. S. da; COUTO, V. de A. Crise e reestruturação agrícola, recursos naturais e meio ambiente. Revista Econômica do Nordeste, Fortaleza, CE, v. 28, n. Especial, p. 401-415, jul. 1997.| Biblioteca(s): Epagri-Sede. |
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| 14. | | HORA, D. S.; da; ROSADO, P. L.; PIRES, M. de M.; SOUSA, G. S. de; GOMES, A. da S. Condicionantes da competitividade da produção de borracha natural no eixo lgrapiúna-ltuberá, Bahia. Agrotrópica, Ilhéus, BA, v. 23, n. 1, p. 21-30, jan./abr. 2011.| Biblioteca(s): Epagri-Sede. |
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| 19. | | PIRES, M. de M.; ANDRADE, S.F.; SÃO JOSÉ, A.R.; GOMES, A. da S. Análise do comportamento dos preços de lima ácida tahiti no Brasil. Informações Econômicas, São Paulo, SP, v.41, n. 9, p. -50-58, set. 2011.| Biblioteca(s): Epagri-Sede. |
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| 20. | | ROSA, C.M.da; CASTILHOS, R.M.V.; DICK, D.P.; PAULETTO, E.A.; GOMES, A.da S. Teor e qualidade de substâncias húmicas de planossolo sob diferentes sistemas de cultivo. Ciência Rural, Santa Maria, v.38, n.6, p.1589-1595, set. 2008.| Biblioteca(s): Epagri-Sede. |
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| Registros recuperados : 25 | |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
23/08/2013 |
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Data da última atualização: |
23/08/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
PERES, L. E. P.; KERBAUY, G. B.; SALATINO, A.; ZAFFARI, G. R.; MERCIER, H. |
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Título: |
Effects of Auxin, Cytokinin and Ethylene Treatments on the Endogenous Ethylene and Auxin-to-cytokinins Ratio Related to direct Root Tip Conversion of Catasetum fimbriatum Lindl. (Orchidaceae) into Buds. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Journal of Plant Physiology, USA, v. 155, p. 551-555, 1999. |
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Idioma: |
Português |
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Conteúdo: |
The present investigation attempts to correlate the effect of the exogenous auxins, cyrokinins and ethylene with rhe endogenous ethylene and auxin-ro-cytokinin ratio, and with the direct root-to-bud conversion in Catasetum fimbriatum. lncubation of root tips with IAA and NAA strongly inhibited both root elongation and bud formation. On the other hand, treatment with IBA resulted in a conspicuous stirnulation of longitudinal root growth, while bud formation was retarded. High levels of exogenous zearin, iP and BA enhanced bud formation, and inhibited root growth. Ethylene production was measured in IAA, IBA and zeatin-treated roots. AlI growth regulators elicited ethylene evolution, which decreased considerably along the period of incubation. Addition of AVG to the media reduced ethylene evolution. Endogenous auxin, cytokinins, and ABA conrents were determined by means of HPLC and ELISA rnethods in root tips of C. fimbriatum pre-incubated with ethylene (CEPA) and cyrokinin (iP). Both exogenous substances stimulated bud formation and conduced to an endogenous IAAlCks rario favourable to Cks. From rhese results it is proposed that the stimulatory effect of exogenous Cks and ethylene on root-to-bud conversion of C. fimbriatum seems to be mediated by rhe establishment of an endogenous auxin-to-cytokinins balance favourable to shoot formation. |
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Palavras-Chave: |
Orchid; Organogenesis; Plant hormones; Root meristem. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02102naa a2200217 a 4500
001 1118892
005 2013-08-23
008 1999 bl uuuu u00u1 u #d
100 1 $aPERES, L. E. P.
245 $aEffects of Auxin, Cytokinin and Ethylene Treatments on the Endogenous Ethylene and Auxin-to-cytokinins Ratio Related to direct Root Tip Conversion of Catasetum fimbriatum Lindl. (Orchidaceae) into Buds.$h[electronic resource]
260 $c1999
520 $aThe present investigation attempts to correlate the effect of the exogenous auxins, cyrokinins and ethylene with rhe endogenous ethylene and auxin-ro-cytokinin ratio, and with the direct root-to-bud conversion in Catasetum fimbriatum. lncubation of root tips with IAA and NAA strongly inhibited both root elongation and bud formation. On the other hand, treatment with IBA resulted in a conspicuous stirnulation of longitudinal root growth, while bud formation was retarded. High levels of exogenous zearin, iP and BA enhanced bud formation, and inhibited root growth. Ethylene production was measured in IAA, IBA and zeatin-treated roots. AlI growth regulators elicited ethylene evolution, which decreased considerably along the period of incubation. Addition of AVG to the media reduced ethylene evolution. Endogenous auxin, cytokinins, and ABA conrents were determined by means of HPLC and ELISA rnethods in root tips of C. fimbriatum pre-incubated with ethylene (CEPA) and cyrokinin (iP). Both exogenous substances stimulated bud formation and conduced to an endogenous IAAlCks rario favourable to Cks. From rhese results it is proposed that the stimulatory effect of exogenous Cks and ethylene on root-to-bud conversion of C. fimbriatum seems to be mediated by rhe establishment of an endogenous auxin-to-cytokinins balance favourable to shoot formation.
653 $aOrchid
653 $aOrganogenesis
653 $aPlant hormones
653 $aRoot meristem
700 1 $aKERBAUY, G. B.
700 1 $aSALATINO, A.
700 1 $aZAFFARI, G. R.
700 1 $aMERCIER, H.
773 $tJournal of Plant Physiology, USA$gv. 155, p. 551-555, 1999.
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