Regeneração de plantas de laranja 'Pêra' via organogênese in vitro Regeneration of 'Pera' sweet orange plants through in vitro organogenesis
O objetivo deste trabalho foi estabelecer um protocolo eficiente de regeneração de plantas in vitro, via organogênese em explante juvenil de laranja 'Pêra' (Citrus sinensis L. Osbeck), para atender futuros trabalhos de transformação genética. Segmentos de epicótilo utilizados como explante...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Rosely Pereira da Silva [verfasserIn] Maria Angélica Pereira de Carvalho Costa [verfasserIn] Antonio da Silva Souza [verfasserIn] Weliton Antonio Bastos de Almeida [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch ; Spanisch ; Portugiesisch |
| Erschienen: |
2005 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: Pesquisa Agropecuária Brasileira - Embrapa Informação Tecnológica, 2004, 40(2005), 12, Seite 1153-1159 |
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| Übergeordnetes Werk: |
volume:40 ; year:2005 ; number:12 ; pages:1153-1159 |
| Links: |
Link aufrufen |
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| DOI / URN: |
10.1590/S0100-204X2005001200001 |
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| Katalog-ID: |
DOAJ001530771 |
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| 520 | |a O objetivo deste trabalho foi estabelecer um protocolo eficiente de regeneração de plantas in vitro, via organogênese em explante juvenil de laranja 'Pêra' (Citrus sinensis L. Osbeck), para atender futuros trabalhos de transformação genética. Segmentos de epicótilo utilizados como explantes foram introduzidos em meio de cultura MT. A fim de maximizar a regeneração de plantas in vitro, foram realizados experimentos para avaliar as concentrações de BAP no meio de cultivo (0, 1, 2, 3 ou 4 mg L-1), tamanho (0,25, 0,5 ou 1 cm), polaridade (basal, medial e apical), posição (horizontal ou vertical), condições de luminosidade (fotoperíodo de 16 horas e escuro por 30 dias) e seccionamento nas extremidades dos explantes, bem como melhores condições para garantir plantas enraizadas (meio MT, MT/2, com ou sem auxina e microenxertia). A combinação de 3 mg L-1 de BAP com segmentos de 0,25 cm de comprimento foi eficiente na resposta organogenética. Segmentos apicais e mediais apresentaram melhores resultados do que os basais. O cultivo dos segmentos na posição horizontal, em fotoperíodo de 16 horas, foi mais eficiente do que na posição vertical. Não houve melhora na indução da organogênese in vitro, quando foram seccionadas as extremidades dos explantes. A microenxertia assegurou 100% de brotos enraizados.<br<The objective of this work was to establish an efficient protocol for in vitro regeneration of plants through organogenesis of sweet orange 'Pera' (Citrus sinensis L. Osbeck) juvenile explants, in order to give support for future studies of genetic transformation. Epicotyl segments used as explants were introduced in MT culture media. To maximize the regeneration of in vitro plants, experiments were performed to evaluate different concentrations of BAP in the culture media (0, 1, 2, 3 or 4 mg L-1), size (0.25, 0.5 or 1 cm), polarity (basal, medium, and apical), position (horizontal or vertical), luminosity conditions (photoperiod of 16 hours, and darkness for 30 days), and incision of the segment ends. In addition, better conditions for obtaining rooted plants (culture media MT, MT/2, with and without auxin and micrografting) were studied. The combination of 3 mg L-1 BAP with segments of 0.25 cm length was efficient for the organogenetic response. Segment apices and mediums were more efficient comparing to the basal parts. Culturing the segments in the horizontal position, with a photoperiod of 16 hours, was more efficient than in the vertical position. There was no improvement in the induction of in vitro organogenesis, when the explant ends were incised. Micrografting assured 100% of rooted shoots. | ||
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10.1590/S0100-204X2005001200001 doi (DE-627)DOAJ001530771 (DE-599)DOAJ41829f6bb5624edaae482e0b0f011f55 DE-627 ger DE-627 rakwb eng spa por S1-972 Rosely Pereira da Silva verfasserin aut Regeneração de plantas de laranja 'Pêra' via organogênese in vitro Regeneration of 'Pera' sweet orange plants through in vitro organogenesis 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier O objetivo deste trabalho foi estabelecer um protocolo eficiente de regeneração de plantas in vitro, via organogênese em explante juvenil de laranja 'Pêra' (Citrus sinensis L. Osbeck), para atender futuros trabalhos de transformação genética. Segmentos de epicótilo utilizados como explantes foram introduzidos em meio de cultura MT. A fim de maximizar a regeneração de plantas in vitro, foram realizados experimentos para avaliar as concentrações de BAP no meio de cultivo (0, 1, 2, 3 ou 4 mg L-1), tamanho (0,25, 0,5 ou 1 cm), polaridade (basal, medial e apical), posição (horizontal ou vertical), condições de luminosidade (fotoperíodo de 16 horas e escuro por 30 dias) e seccionamento nas extremidades dos explantes, bem como melhores condições para garantir plantas enraizadas (meio MT, MT/2, com ou sem auxina e microenxertia). A combinação de 3 mg L-1 de BAP com segmentos de 0,25 cm de comprimento foi eficiente na resposta organogenética. Segmentos apicais e mediais apresentaram melhores resultados do que os basais. O cultivo dos segmentos na posição horizontal, em fotoperíodo de 16 horas, foi mais eficiente do que na posição vertical. Não houve melhora na indução da organogênese in vitro, quando foram seccionadas as extremidades dos explantes. A microenxertia assegurou 100% de brotos enraizados.<br<The objective of this work was to establish an efficient protocol for in vitro regeneration of plants through organogenesis of sweet orange 'Pera' (Citrus sinensis L. Osbeck) juvenile explants, in order to give support for future studies of genetic transformation. Epicotyl segments used as explants were introduced in MT culture media. To maximize the regeneration of in vitro plants, experiments were performed to evaluate different concentrations of BAP in the culture media (0, 1, 2, 3 or 4 mg L-1), size (0.25, 0.5 or 1 cm), polarity (basal, medium, and apical), position (horizontal or vertical), luminosity conditions (photoperiod of 16 hours, and darkness for 30 days), and incision of the segment ends. In addition, better conditions for obtaining rooted plants (culture media MT, MT/2, with and without auxin and micrografting) were studied. The combination of 3 mg L-1 BAP with segments of 0.25 cm length was efficient for the organogenetic response. Segment apices and mediums were more efficient comparing to the basal parts. Culturing the segments in the horizontal position, with a photoperiod of 16 hours, was more efficient than in the vertical position. There was no improvement in the induction of in vitro organogenesis, when the explant ends were incised. Micrografting assured 100% of rooted shoots. Citrus sinensis cultura de tecidos explante juvenil benzilaminopurina microenxertia plant tissue culture juvenile explants benzilaminopurine micrografting Agriculture (General) Maria Angélica Pereira de Carvalho Costa verfasserin aut Antonio da Silva Souza verfasserin aut Weliton Antonio Bastos de Almeida verfasserin aut In Pesquisa Agropecuária Brasileira Embrapa Informação Tecnológica, 2004 40(2005), 12, Seite 1153-1159 (DE-627)331758326 (DE-600)2053197-7 16783921 nnns volume:40 year:2005 number:12 pages:1153-1159 https://doi.org/10.1590/S0100-204X2005001200001 kostenfrei https://doaj.org/article/41829f6bb5624edaae482e0b0f011f55 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005001200001 kostenfrei https://doaj.org/toc/0100-204X Journal toc kostenfrei https://doaj.org/toc/1678-3921 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 40 2005 12 1153-1159 |
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10.1590/S0100-204X2005001200001 doi (DE-627)DOAJ001530771 (DE-599)DOAJ41829f6bb5624edaae482e0b0f011f55 DE-627 ger DE-627 rakwb eng spa por S1-972 Rosely Pereira da Silva verfasserin aut Regeneração de plantas de laranja 'Pêra' via organogênese in vitro Regeneration of 'Pera' sweet orange plants through in vitro organogenesis 2005 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier O objetivo deste trabalho foi estabelecer um protocolo eficiente de regeneração de plantas in vitro, via organogênese em explante juvenil de laranja 'Pêra' (Citrus sinensis L. Osbeck), para atender futuros trabalhos de transformação genética. Segmentos de epicótilo utilizados como explantes foram introduzidos em meio de cultura MT. A fim de maximizar a regeneração de plantas in vitro, foram realizados experimentos para avaliar as concentrações de BAP no meio de cultivo (0, 1, 2, 3 ou 4 mg L-1), tamanho (0,25, 0,5 ou 1 cm), polaridade (basal, medial e apical), posição (horizontal ou vertical), condições de luminosidade (fotoperíodo de 16 horas e escuro por 30 dias) e seccionamento nas extremidades dos explantes, bem como melhores condições para garantir plantas enraizadas (meio MT, MT/2, com ou sem auxina e microenxertia). A combinação de 3 mg L-1 de BAP com segmentos de 0,25 cm de comprimento foi eficiente na resposta organogenética. Segmentos apicais e mediais apresentaram melhores resultados do que os basais. O cultivo dos segmentos na posição horizontal, em fotoperíodo de 16 horas, foi mais eficiente do que na posição vertical. Não houve melhora na indução da organogênese in vitro, quando foram seccionadas as extremidades dos explantes. A microenxertia assegurou 100% de brotos enraizados.<br<The objective of this work was to establish an efficient protocol for in vitro regeneration of plants through organogenesis of sweet orange 'Pera' (Citrus sinensis L. Osbeck) juvenile explants, in order to give support for future studies of genetic transformation. Epicotyl segments used as explants were introduced in MT culture media. To maximize the regeneration of in vitro plants, experiments were performed to evaluate different concentrations of BAP in the culture media (0, 1, 2, 3 or 4 mg L-1), size (0.25, 0.5 or 1 cm), polarity (basal, medium, and apical), position (horizontal or vertical), luminosity conditions (photoperiod of 16 hours, and darkness for 30 days), and incision of the segment ends. In addition, better conditions for obtaining rooted plants (culture media MT, MT/2, with and without auxin and micrografting) were studied. The combination of 3 mg L-1 BAP with segments of 0.25 cm length was efficient for the organogenetic response. Segment apices and mediums were more efficient comparing to the basal parts. Culturing the segments in the horizontal position, with a photoperiod of 16 hours, was more efficient than in the vertical position. There was no improvement in the induction of in vitro organogenesis, when the explant ends were incised. Micrografting assured 100% of rooted shoots. Citrus sinensis cultura de tecidos explante juvenil benzilaminopurina microenxertia plant tissue culture juvenile explants benzilaminopurine micrografting Agriculture (General) Maria Angélica Pereira de Carvalho Costa verfasserin aut Antonio da Silva Souza verfasserin aut Weliton Antonio Bastos de Almeida verfasserin aut In Pesquisa Agropecuária Brasileira Embrapa Informação Tecnológica, 2004 40(2005), 12, Seite 1153-1159 (DE-627)331758326 (DE-600)2053197-7 16783921 nnns volume:40 year:2005 number:12 pages:1153-1159 https://doi.org/10.1590/S0100-204X2005001200001 kostenfrei https://doaj.org/article/41829f6bb5624edaae482e0b0f011f55 kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005001200001 kostenfrei https://doaj.org/toc/0100-204X Journal toc kostenfrei https://doaj.org/toc/1678-3921 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 40 2005 12 1153-1159 |
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Regeneração de plantas de laranja 'Pêra' via organogênese in vitro Regeneration of 'Pera' sweet orange plants through in vitro organogenesis |
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Regeneração de plantas de laranja 'Pêra' via organogênese in vitro Regeneration of 'Pera' sweet orange plants through in vitro organogenesis |
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O objetivo deste trabalho foi estabelecer um protocolo eficiente de regeneração de plantas in vitro, via organogênese em explante juvenil de laranja 'Pêra' (Citrus sinensis L. Osbeck), para atender futuros trabalhos de transformação genética. Segmentos de epicótilo utilizados como explantes foram introduzidos em meio de cultura MT. A fim de maximizar a regeneração de plantas in vitro, foram realizados experimentos para avaliar as concentrações de BAP no meio de cultivo (0, 1, 2, 3 ou 4 mg L-1), tamanho (0,25, 0,5 ou 1 cm), polaridade (basal, medial e apical), posição (horizontal ou vertical), condições de luminosidade (fotoperíodo de 16 horas e escuro por 30 dias) e seccionamento nas extremidades dos explantes, bem como melhores condições para garantir plantas enraizadas (meio MT, MT/2, com ou sem auxina e microenxertia). A combinação de 3 mg L-1 de BAP com segmentos de 0,25 cm de comprimento foi eficiente na resposta organogenética. Segmentos apicais e mediais apresentaram melhores resultados do que os basais. O cultivo dos segmentos na posição horizontal, em fotoperíodo de 16 horas, foi mais eficiente do que na posição vertical. Não houve melhora na indução da organogênese in vitro, quando foram seccionadas as extremidades dos explantes. A microenxertia assegurou 100% de brotos enraizados.<br<The objective of this work was to establish an efficient protocol for in vitro regeneration of plants through organogenesis of sweet orange 'Pera' (Citrus sinensis L. Osbeck) juvenile explants, in order to give support for future studies of genetic transformation. Epicotyl segments used as explants were introduced in MT culture media. To maximize the regeneration of in vitro plants, experiments were performed to evaluate different concentrations of BAP in the culture media (0, 1, 2, 3 or 4 mg L-1), size (0.25, 0.5 or 1 cm), polarity (basal, medium, and apical), position (horizontal or vertical), luminosity conditions (photoperiod of 16 hours, and darkness for 30 days), and incision of the segment ends. In addition, better conditions for obtaining rooted plants (culture media MT, MT/2, with and without auxin and micrografting) were studied. The combination of 3 mg L-1 BAP with segments of 0.25 cm length was efficient for the organogenetic response. Segment apices and mediums were more efficient comparing to the basal parts. Culturing the segments in the horizontal position, with a photoperiod of 16 hours, was more efficient than in the vertical position. There was no improvement in the induction of in vitro organogenesis, when the explant ends were incised. Micrografting assured 100% of rooted shoots. |
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O objetivo deste trabalho foi estabelecer um protocolo eficiente de regeneração de plantas in vitro, via organogênese em explante juvenil de laranja 'Pêra' (Citrus sinensis L. Osbeck), para atender futuros trabalhos de transformação genética. Segmentos de epicótilo utilizados como explantes foram introduzidos em meio de cultura MT. A fim de maximizar a regeneração de plantas in vitro, foram realizados experimentos para avaliar as concentrações de BAP no meio de cultivo (0, 1, 2, 3 ou 4 mg L-1), tamanho (0,25, 0,5 ou 1 cm), polaridade (basal, medial e apical), posição (horizontal ou vertical), condições de luminosidade (fotoperíodo de 16 horas e escuro por 30 dias) e seccionamento nas extremidades dos explantes, bem como melhores condições para garantir plantas enraizadas (meio MT, MT/2, com ou sem auxina e microenxertia). A combinação de 3 mg L-1 de BAP com segmentos de 0,25 cm de comprimento foi eficiente na resposta organogenética. Segmentos apicais e mediais apresentaram melhores resultados do que os basais. O cultivo dos segmentos na posição horizontal, em fotoperíodo de 16 horas, foi mais eficiente do que na posição vertical. Não houve melhora na indução da organogênese in vitro, quando foram seccionadas as extremidades dos explantes. A microenxertia assegurou 100% de brotos enraizados.<br<The objective of this work was to establish an efficient protocol for in vitro regeneration of plants through organogenesis of sweet orange 'Pera' (Citrus sinensis L. Osbeck) juvenile explants, in order to give support for future studies of genetic transformation. Epicotyl segments used as explants were introduced in MT culture media. To maximize the regeneration of in vitro plants, experiments were performed to evaluate different concentrations of BAP in the culture media (0, 1, 2, 3 or 4 mg L-1), size (0.25, 0.5 or 1 cm), polarity (basal, medium, and apical), position (horizontal or vertical), luminosity conditions (photoperiod of 16 hours, and darkness for 30 days), and incision of the segment ends. In addition, better conditions for obtaining rooted plants (culture media MT, MT/2, with and without auxin and micrografting) were studied. The combination of 3 mg L-1 BAP with segments of 0.25 cm length was efficient for the organogenetic response. Segment apices and mediums were more efficient comparing to the basal parts. Culturing the segments in the horizontal position, with a photoperiod of 16 hours, was more efficient than in the vertical position. There was no improvement in the induction of in vitro organogenesis, when the explant ends were incised. Micrografting assured 100% of rooted shoots. |
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O objetivo deste trabalho foi estabelecer um protocolo eficiente de regeneração de plantas in vitro, via organogênese em explante juvenil de laranja 'Pêra' (Citrus sinensis L. Osbeck), para atender futuros trabalhos de transformação genética. Segmentos de epicótilo utilizados como explantes foram introduzidos em meio de cultura MT. A fim de maximizar a regeneração de plantas in vitro, foram realizados experimentos para avaliar as concentrações de BAP no meio de cultivo (0, 1, 2, 3 ou 4 mg L-1), tamanho (0,25, 0,5 ou 1 cm), polaridade (basal, medial e apical), posição (horizontal ou vertical), condições de luminosidade (fotoperíodo de 16 horas e escuro por 30 dias) e seccionamento nas extremidades dos explantes, bem como melhores condições para garantir plantas enraizadas (meio MT, MT/2, com ou sem auxina e microenxertia). A combinação de 3 mg L-1 de BAP com segmentos de 0,25 cm de comprimento foi eficiente na resposta organogenética. Segmentos apicais e mediais apresentaram melhores resultados do que os basais. O cultivo dos segmentos na posição horizontal, em fotoperíodo de 16 horas, foi mais eficiente do que na posição vertical. Não houve melhora na indução da organogênese in vitro, quando foram seccionadas as extremidades dos explantes. A microenxertia assegurou 100% de brotos enraizados.<br<The objective of this work was to establish an efficient protocol for in vitro regeneration of plants through organogenesis of sweet orange 'Pera' (Citrus sinensis L. Osbeck) juvenile explants, in order to give support for future studies of genetic transformation. Epicotyl segments used as explants were introduced in MT culture media. To maximize the regeneration of in vitro plants, experiments were performed to evaluate different concentrations of BAP in the culture media (0, 1, 2, 3 or 4 mg L-1), size (0.25, 0.5 or 1 cm), polarity (basal, medium, and apical), position (horizontal or vertical), luminosity conditions (photoperiod of 16 hours, and darkness for 30 days), and incision of the segment ends. In addition, better conditions for obtaining rooted plants (culture media MT, MT/2, with and without auxin and micrografting) were studied. The combination of 3 mg L-1 BAP with segments of 0.25 cm length was efficient for the organogenetic response. Segment apices and mediums were more efficient comparing to the basal parts. Culturing the segments in the horizontal position, with a photoperiod of 16 hours, was more efficient than in the vertical position. There was no improvement in the induction of in vitro organogenesis, when the explant ends were incised. Micrografting assured 100% of rooted shoots. |
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