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| Registros recuperados : 13 | |
| 1. |  | FRANCO, D.F.; MAGALHAES JR., A.M. de; VERNETTI JR., F.J.; TERRES, A.L.; FAGUNDES, P.R.R.; RANGEL, P.H.N.; MOURA NETO, F.P. Ensaio estadual de valor de cultivo e uso de linhagens promissoras de arroz irrigado da Embrapa, no Rio Grande do sul, safra 2001/2002. 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.164-167.| Biblioteca(s): Epagri-Sede. |
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| 2. | | LEITE, D.L.; CHOER, E.; AUGUSTIN, E.; TERRES, A.L. Caracterizacao de cultivares e linhagens de arroz irrigado (Oryza sativa L.) atraves de RAPD. 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.236-238.| Biblioteca(s): Epagri-Sede. |
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| 3. | | MAGALHAES Jr., A.M. de; FRANCO, D.F.; FAGUNDES, P.R.R.; TERRES, A.L.; ANDREAS, A.; RANGEL, P.H.N.; SILVA, M.P. Avaliacao de familias So:2 oriundas do programa selecao recorrente de arroz irrigado da Embrapa-safra 2001/2002. 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.119-122.| Biblioteca(s): Epagri-Sede. |
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| 4. | | MAGALHAES JUNIOR, A.M. de; TERRES, A.L.; FAGUNDES, P.R.R.; FRANCO, D.F.; PETERS, J.A. Cultura de anteras no melhoramento genetico de arroz irrigado. Agropecuaria Clima Temperado, Pelotas,RS, v.1, n.2, p.183-191, dez., 1998.| Biblioteca(s): Epagri-Sede. |
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| 5. | | MARTINS, J.F. da S.; CARBONARI, J.J.; VERONEZ, A.B.C.; CUNHA, U. da S.; TERRES, A.L.S. Avaliacao da resistencia de arroz ao gorgulho-aquatico, oryzophagus oryzae, atraves do indice de infestacao larval. Agropecuaria Clima Temperado, Pelotas,RS, v.1, n.1, p.79-82, jun., 1998.| Biblioteca(s): Epagri-Sede. |
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| 7. | | NUNES, C.D.M.; FRANCO, D.F.; TERRES, A.L.; FAGUNDES, P.R.R.; BERNADES, A.P. Avaliacao da reacao de resistencia a brusone nos genotipos de arroz irrigado dos experimentos de valor de cultivo e uso, safras 2000/01 e 2001/02. 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.115-118.| Biblioteca(s): Epagri-Sede. |
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| 8. | | NUNES, C.D.M.; TERRES, A.L.; FAGUNDES, P.R.R.; BRANCAO, N.; BERCHET, E.D. Avaliacao da reacao de resistencia a brusone no germoplasma de arroz irrigado. 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.277-279.| Biblioteca(s): Epagri-Sede. |
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| 9. | | SOUZA, P.R.de; CARMONA, P.S.; ISHIY, T.; TERRES, A.L. Avaliacao de genotipos de arroz irrigado nas condicoes agroclimaticas do Rio Grande do Sul e Santa Catarina. In: REUNIAO DA CULTURA DO ARROZ IRRIGADO, 14., 1985, Peloras, RS. Anais... Pelotas, RS: Embrapa-CPATB, 1985. p.70-79. (Embrapa-CPATB. Documentos, 26).| Biblioteca(s): Epagri-Sede. |
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| 12. | | TERRES, A.L.; MACHADO, M.O.; FRANCO, D.F.; MAGALHAES JUNIOR, A.; NUNES, C.D.M.; FAGUNDES, P.R.; MARTINS, J.F. BRS Pelota. Cultivar de arroz irrigado de alto potencial produtivo. Agropecuaria Clima Temperado, Pelotas,RS, v.3, n.2, p.291-294, dez., 2000.| Biblioteca(s): Epagri-Sede. |
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| 13. | | TERRES, A.L.S.; FAGUNDES, P.R.R.; MAGALHAES JR., A.M.; FRANCO, D.F.; NUNES, C.D.M.; ANDRES, A. Melhoramento genetico de arroz irrigado da Embrapa para tipos alternativos a cadeia produtiva. 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.188-191.| Biblioteca(s): Epagri-Sede. |
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| Registros recuperados : 13 | |
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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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