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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
07/10/2013 |
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Data da última atualização: |
28/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, T. C. de; SOUZA, E. dos S.; DOUSSEAU, S.; CASTRO, E. M. de; MAGALHAES, P. C. |
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Afiliação: |
PAULO CESAR MAGALHAES, CNPMS. |
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Título: |
Seedlings of Garcinia brasiliensis (Clusiaceae) subjected to rootflooding: Physiological, morphoanatomical, and antioxidantresponses to the stress. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Aquatic Botany, Amsterdam, v. 111, p. 43-49, 2013. |
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DOI: |
10.1016/j.aquabot.2013.08.006 |
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Idioma: |
Inglês |
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Conteúdo: |
Garcinia brasiliensis (Mart.) is a native Amazonian tree cultivated throughout Brazil. This plant can tolerate flooding or submergence for several days, during certain periods of the year. The morphophysiological changes of G. brasiliensis (Mart.) seedlings were assessed that may favor their survival in flooded environments. Seedlings with six fully expanded leaves were placed in tanks so that their roots were submerged for 90 days. Antioxidant enzymatic activity and the contents of H2O2, soluble sugar, starch, and amino acid of the roots were evaluated on six harvesting occasions. At the end of the experiment, the dry mass and root morphology of the seedlings were determined. Flooding lead to a decrease in dry mass of roots and aboveground parts, as well as root length (58%), surface area (51%) and volume (43%), especially of roots with smaller diameter. The roots of the flooded seedlings presented thicker exodermis and greater xylem number, thicker phloem and fewer xylem fibers. There was a small amount of aerenchyma in the roots and hypertrophied lenticels were detected at the base of the stem. Superoxide dismutase activity was significantly higher in flooded roots at all harvesting times, and ascorbate peroxidase and catalase activities were highest during the last two harvestings. H2O2 content increased after 40 and 55 days of flooding, followed by a drastic decrease. After 70 and 90 days of flooding there was an expressive increase in soluble sugars, and at 90 days, a reduction in starch content. No differences were observed in amino acid content. MenosGarcinia brasiliensis (Mart.) is a native Amazonian tree cultivated throughout Brazil. This plant can tolerate flooding or submergence for several days, during certain periods of the year. The morphophysiological changes of G. brasiliensis (Mart.) seedlings were assessed that may favor their survival in flooded environments. Seedlings with six fully expanded leaves were placed in tanks so that their roots were submerged for 90 days. Antioxidant enzymatic activity and the contents of H2O2, soluble sugar, starch, and amino acid of the roots were evaluated on six harvesting occasions. At the end of the experiment, the dry mass and root morphology of the seedlings were determined. Flooding lead to a decrease in dry mass of roots and aboveground parts, as well as root length (58%), surface area (51%) and volume (43%), especially of roots with smaller diameter. The roots of the flooded seedlings presented thicker exodermis and greater xylem number, thicker phloem and fewer xylem fibers. There was a small amount of aerenchyma in the roots and hypertrophied lenticels were detected at the base of the stem. Superoxide dismutase activity was significantly higher in flooded roots at all harvesting times, and ascorbate peroxidase and catalase activities were highest during the last two harvestings. H2O2 content increased after 40 and 55 days of flooding, followed by a drastic decrease. After 70 and 90 days of flooding there was an expressive increase in soluble sugars, and at 90 days, a ... Mostrar Tudo |
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Palavras-Chave: |
Hipoxia; Rheedia brasiliensis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/90582/1/Seedlings-Garcinia.pdf
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Marc: |
LEADER 02265naa a2200205 a 4500
001 1967919
005 2017-09-28
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1016/j.aquabot.2013.08.006$2DOI
100 1 $aSOUZA, T. C. de
245 $aSeedlings of Garcinia brasiliensis (Clusiaceae) subjected to rootflooding$bPhysiological, morphoanatomical, and antioxidantresponses to the stress.$h[electronic resource]
260 $c2013
520 $aGarcinia brasiliensis (Mart.) is a native Amazonian tree cultivated throughout Brazil. This plant can tolerate flooding or submergence for several days, during certain periods of the year. The morphophysiological changes of G. brasiliensis (Mart.) seedlings were assessed that may favor their survival in flooded environments. Seedlings with six fully expanded leaves were placed in tanks so that their roots were submerged for 90 days. Antioxidant enzymatic activity and the contents of H2O2, soluble sugar, starch, and amino acid of the roots were evaluated on six harvesting occasions. At the end of the experiment, the dry mass and root morphology of the seedlings were determined. Flooding lead to a decrease in dry mass of roots and aboveground parts, as well as root length (58%), surface area (51%) and volume (43%), especially of roots with smaller diameter. The roots of the flooded seedlings presented thicker exodermis and greater xylem number, thicker phloem and fewer xylem fibers. There was a small amount of aerenchyma in the roots and hypertrophied lenticels were detected at the base of the stem. Superoxide dismutase activity was significantly higher in flooded roots at all harvesting times, and ascorbate peroxidase and catalase activities were highest during the last two harvestings. H2O2 content increased after 40 and 55 days of flooding, followed by a drastic decrease. After 70 and 90 days of flooding there was an expressive increase in soluble sugars, and at 90 days, a reduction in starch content. No differences were observed in amino acid content.
653 $aHipoxia
653 $aRheedia brasiliensis
700 1 $aSOUZA, E. dos S.
700 1 $aDOUSSEAU, S.
700 1 $aCASTRO, E. M. de
700 1 $aMAGALHAES, P. C.
773 $tAquatic Botany, Amsterdam$gv. 111, p. 43-49, 2013.
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Embrapa Milho e Sorgo (CNPMS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio-Norte. Para informações adicionais entre em contato com cpamn.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
28/03/2009 |
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Data da última atualização: |
06/06/2023 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
LOPES, M. T. do R.; PEREIRA, F. de M.; CAMARGO, R. C. R. de. |
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Afiliação: |
MARIA TERESA DO REGO LOPES, CPAMN; FABIA DE MELLO PEREIRA, CPAMN; RICARDO COSTA RODRIGUES DE CAMARGO, CPAMN. |
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Título: |
Apicultura. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: OLIVEIRA, F. das C.; SOUSA, V. F. de; OLIVEIRA JÚNIOR, J. O. L. de (Ed.). Estratégias de desenvolvimento rural e alternativas tecnológicas para a agricultura familiar na Região Meio-Norte. Teresina: Embrapa Meio-Norte, 2008. Cap. 9. p. 281-310. |
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ISBN: |
978-85-88388-14-7 |
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Idioma: |
Português |
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Conteúdo: |
Procurou-se apresentar neste capítulo noções gerais sobre o sistema de produção apícola, com ênfase na produção de mel, abordando-se práticas comumente transferidas aos apicultores do Nordeste, assim como resultados de pesquisas já realizadas na região, que buscam a solução de gargalos tecnológicos do setor. Instalação de apiários; Flora apícola; Acesso; Topografia; Proteção contra os ventos; Perímetro de segurança; Identificação; Água; Sombreamento; Suporte das colmeias; Disposição das colmeias; Povoamento das colmeias; Manejo das colmeias; Alternativas de alimentação para abelhas; Alimento energético; Alimento protéico; Manejo na colheita do mel; Controle da qualidade do produto final. |
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Palavras-Chave: |
Adoção de inovação. |
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Thesagro: |
Comunidade Rural; Desenvolvimento Rural; Sistema de Produção; Transferência de Tecnologia. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01518naa a2200217 a 4500
001 1069774
005 2023-06-06
008 2008 bl uuuu u00u1 u #d
020 $a978-85-88388-14-7
100 1 $aLOPES, M. T. do R.
245 $aApicultura.
260 $c2008
520 $aProcurou-se apresentar neste capítulo noções gerais sobre o sistema de produção apícola, com ênfase na produção de mel, abordando-se práticas comumente transferidas aos apicultores do Nordeste, assim como resultados de pesquisas já realizadas na região, que buscam a solução de gargalos tecnológicos do setor. Instalação de apiários; Flora apícola; Acesso; Topografia; Proteção contra os ventos; Perímetro de segurança; Identificação; Água; Sombreamento; Suporte das colmeias; Disposição das colmeias; Povoamento das colmeias; Manejo das colmeias; Alternativas de alimentação para abelhas; Alimento energético; Alimento protéico; Manejo na colheita do mel; Controle da qualidade do produto final.
650 $aComunidade Rural
650 $aDesenvolvimento Rural
650 $aSistema de Produção
650 $aTransferência de Tecnologia
653 $aAdoção de inovação
700 1 $aPEREIRA, F. de M.
700 1 $aCAMARGO, R. C. R. de
773 $tIn: OLIVEIRA, F. das C.; SOUSA, V. F. de; OLIVEIRA JÚNIOR, J. O. L. de (Ed.). Estratégias de desenvolvimento rural e alternativas tecnológicas para a agricultura familiar na Região Meio-Norte. Teresina: Embrapa Meio-Norte, 2008. Cap. 9. p. 281-310.
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