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Registro Completo |
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
06/04/1998 |
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Data da última atualização: |
06/04/1998 |
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Autoria: |
JONES, L. H.; HANKE, D. E.; EEWENS, C. J. |
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Título: |
An evaluation of the role of cytokinins in the development of abnormal inflorescences in oil palms (Elaeis guineensis Jacq.) regenerated from tissue culture. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Journal of Plant Growth Regulation, v. 14, n. 3, p. 135-142, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
Tissue cultures and regenerant plants from cell lines producing palms with normal and abnormal flowers were analysed for cytokinin content and compared with zygotic embryos and seedlings. Immature inflorescences at the critical stage of flower development dissected from normal and abnormal palms were also analysed. HPLC/radioimmunoassay and HPLC/enzyme-linked immunosorbent assay methods were used over a period of several years to measure the isoprenoid cytokinins. Oil palm cultures and regenerant plants contained relatively high concentrations of the 9-glucosides of isopentenyladenine ([9G]ip) and zeatin ([9g]Z). The predominant biologically active isoprenoid cytokinin present was zeatin riboside ([9R]Z), with lesser amounts of isopentenyladenine (iP) and isopentenyladenosine ([9R]iP). There was evidence of small amounts of dihydrozeatin compounds, but high concentrations (mainly as dihydrozeatin-9-glucoside ([9G]DHZ)) were confined to the haustorium of the zygotic embryo. Callus tissue contained very low concentrations of cytokinin. Comparison of 2 isogenic lines of one clone giving rise to normal and abnormal palms showed significantly higher concentrations of [9R]Z and [9G]Z in the normal than in the abnormal line and, in embryoids only, higher [9G]iP in the normal line. In all other cases the between-clone differences were greater than any normal/abnormal differences. There was a general tendency for increased concentrations of [9G]iP in abnormal lines and for this compound to be in a higher concentration in embryoids and plants derived from culture than in zygotic embryos and seedlings. Analysis of cytokinins in immature female inflorescences of normal and abnormal palms of a single clone showed the abnormal inflorescences to have higher concentrations of [9R]Z and [9R]DHZ and less [9G]Z than the normal inflorescences at comparable stages of development. MenosTissue cultures and regenerant plants from cell lines producing palms with normal and abnormal flowers were analysed for cytokinin content and compared with zygotic embryos and seedlings. Immature inflorescences at the critical stage of flower development dissected from normal and abnormal palms were also analysed. HPLC/radioimmunoassay and HPLC/enzyme-linked immunosorbent assay methods were used over a period of several years to measure the isoprenoid cytokinins. Oil palm cultures and regenerant plants contained relatively high concentrations of the 9-glucosides of isopentenyladenine ([9G]ip) and zeatin ([9g]Z). The predominant biologically active isoprenoid cytokinin present was zeatin riboside ([9R]Z), with lesser amounts of isopentenyladenine (iP) and isopentenyladenosine ([9R]iP). There was evidence of small amounts of dihydrozeatin compounds, but high concentrations (mainly as dihydrozeatin-9-glucoside ([9G]DHZ)) were confined to the haustorium of the zygotic embryo. Callus tissue contained very low concentrations of cytokinin. Comparison of 2 isogenic lines of one clone giving rise to normal and abnormal palms showed significantly higher concentrations of [9R]Z and [9G]Z in the normal than in the abnormal line and, in embryoids only, higher [9G]iP in the normal line. In all other cases the between-clone differences were greater than any normal/abnormal differences. There was a general tendency for increased concentrations of [9G]iP in abnormal lines and for this compo... Mostrar Tudo |
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Palavras-Chave: |
Oil palms; Plant embryos; Sementes; Tropical crops. |
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Thesagro: |
Cultura de Tecido; Cultura In Vitro; Embrião Vegetal; Inflorescência; Palmeira Oleaginosa; Planta Oleaginosa; Regulador de Crescimento. |
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Thesaurus Nal: |
cytokinins; growth regulators; in vitro culture; inflorescences; oil crops; oilseeds; physiology; plant growth substances; tissue culture; zeatin. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03048naa a2200397 a 4500
001 1367449
005 1998-04-06
008 1995 bl --- 0-- u #d
100 1 $aJONES, L. H.
245 $aAn evaluation of the role of cytokinins in the development of abnormal inflorescences in oil palms (Elaeis guineensis Jacq.) regenerated from tissue culture.
260 $c1995
520 $aTissue cultures and regenerant plants from cell lines producing palms with normal and abnormal flowers were analysed for cytokinin content and compared with zygotic embryos and seedlings. Immature inflorescences at the critical stage of flower development dissected from normal and abnormal palms were also analysed. HPLC/radioimmunoassay and HPLC/enzyme-linked immunosorbent assay methods were used over a period of several years to measure the isoprenoid cytokinins. Oil palm cultures and regenerant plants contained relatively high concentrations of the 9-glucosides of isopentenyladenine ([9G]ip) and zeatin ([9g]Z). The predominant biologically active isoprenoid cytokinin present was zeatin riboside ([9R]Z), with lesser amounts of isopentenyladenine (iP) and isopentenyladenosine ([9R]iP). There was evidence of small amounts of dihydrozeatin compounds, but high concentrations (mainly as dihydrozeatin-9-glucoside ([9G]DHZ)) were confined to the haustorium of the zygotic embryo. Callus tissue contained very low concentrations of cytokinin. Comparison of 2 isogenic lines of one clone giving rise to normal and abnormal palms showed significantly higher concentrations of [9R]Z and [9G]Z in the normal than in the abnormal line and, in embryoids only, higher [9G]iP in the normal line. In all other cases the between-clone differences were greater than any normal/abnormal differences. There was a general tendency for increased concentrations of [9G]iP in abnormal lines and for this compound to be in a higher concentration in embryoids and plants derived from culture than in zygotic embryos and seedlings. Analysis of cytokinins in immature female inflorescences of normal and abnormal palms of a single clone showed the abnormal inflorescences to have higher concentrations of [9R]Z and [9R]DHZ and less [9G]Z than the normal inflorescences at comparable stages of development.
650 $acytokinins
650 $agrowth regulators
650 $ain vitro culture
650 $ainflorescences
650 $aoil crops
650 $aoilseeds
650 $aphysiology
650 $aplant growth substances
650 $atissue culture
650 $azeatin
650 $aCultura de Tecido
650 $aCultura In Vitro
650 $aEmbrião Vegetal
650 $aInflorescência
650 $aPalmeira Oleaginosa
650 $aPlanta Oleaginosa
650 $aRegulador de Crescimento
653 $aOil palms
653 $aPlant embryos
653 $aSementes
653 $aTropical crops
700 1 $aHANKE, D. E.
700 1 $aEEWENS, C. J.
773 $tJournal of Plant Growth Regulation$gv. 14, n. 3, p. 135-142, 1995.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
24/02/2016 |
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Data da última atualização: |
24/02/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SANCHEZ, M. S. dos S.; NASCIMENTO, M. S.; GONÇALVES, V. T.; PARISI, J.; HISANO, H. |
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Afiliação: |
M. S. dos S. SANCHEZ, Universidade Estadual do Oeste do Paraná; M. S. NASCIMENTO, Universidade Estadual do Oeste do Paraná; V. T. GONÇALVES, FAJ; J. PARISI, FAJ; HAMILTON HISANO, CNPMA. |
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Título: |
Tissue analysis of pacu Piaractus mesopotamicus juvenile fed sorghum. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL DE NUTRIÇÃO E SAÚDE DE PEIXES, 6., 2015, Botucatu/SP. Anais... Botucatu: Universidade Estadual Paulista, 2015. |
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Páginas: |
102 |
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Idioma: |
Inglês |
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Palavras-Chave: |
Sorghum. |
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Thesagro: |
Pacu. |
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Thesaurus NAL: |
Piaractus mesopotamicus. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/140019/1/2015RA-091.pdf
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Marc: |
LEADER 00653nam a2200193 a 4500
001 2038475
005 2016-02-24
008 2015 bl uuuu u00u1 u #d
100 1 $aSANCHEZ, M. S. dos S.
245 $aTissue analysis of pacu Piaractus mesopotamicus juvenile fed sorghum.$h[electronic resource]
260 $aIn: SIMPÓSIO INTERNACIONAL DE NUTRIÇÃO E SAÚDE DE PEIXES, 6., 2015, Botucatu/SP. Anais... Botucatu: Universidade Estadual Paulista$c2015
300 $a102
650 $aPiaractus mesopotamicus
650 $aPacu
653 $aSorghum
700 1 $aNASCIMENTO, M. S.
700 1 $aGONÇALVES, V. T.
700 1 $aPARISI, J.
700 1 $aHISANO, H.
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Embrapa Meio Ambiente (CNPMA) |
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