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| 3. |  | TORGA, P. P.; RANGEL, P. H. N.; ABREU, A. G. de; COSTA, J. G. C. da. Comparação entre métodos de germinação em acessos de feijão-comum. Revista RG News, v. 4, n. 3, p. 402, 2018. Edição especial dos Anais do 5º Congresso Brasileiro de Recursos Genéticos, Fortaleza, nov. 2018.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 10. | | TORGA, P. P.; SANTOS, J. B. dos; PEREIRA, H. S.; FERREIRA, D. F.; LEITE, M. E. Seleção de famílias de feijoeiro baseada na produtividade, no tipo de grãos e informações de QTLs. Ciência e Agrotecnologia, v. 34, n. 1, p. 95-100, jan./fev. 2010.| Biblioteca(s): Embrapa Algodão; Embrapa Arroz e Feijão. |
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| 14. | | TEIXEIRA, W. G.; PEREIRA, H. S.; BASSINELLO, P. Z.; TORGA, P. P.; MELO, L. C. Tempo de cocção em genótipos de feijoeiro comum com grãos preto em diferentes ambientes. In: SEMINÁRIO JOVENS TALENTOS, 4., 2010, Santo Antônio de Goiás. Resumos apresentados. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2010. p. 38. (Embrapa Arroz e Feijão. Documentos, 257).| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 17. | | GUIMARÃES, N. C. C.; TORGA, P. P.; RESENDE, E. C.; CHALFUN JUNIOR, A.; PAIVA, E.; PAIVA, L. V. Identificação de variantes somaclonais em bananeiras 'Prata Anã', utilizando técnicas moleculares e citogenéticas. Ciência e Agrotecnologia, Lavras, v. 33, n. 2, p. 448-454, 2009.| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 19. | | PEREIRA, J. A.; COLOMBARI FILHO, J. M.; TORGA, P. P.; RIBEIRO, V. Q.; SANTIAGO, C. M.; ABREU, G. B. Diferenças morfológicas e agronômicas marcantes entre os arrozes vermelhos Oryza sativa L. e Oryza glaberrima Steud. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 10., 2017, Gramado, RS. Intensificação sustentável: anais. Gramado: Sosbai, 2017.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 20. | | PEREIRA, J. A.; COLOMBARI FILHO, J. M.; TORGA, P. P.; RIBEIRO, V. Q.; SANTIAGO, C. M.; ABREU, G. B. Diferenças morfológicas e agronômicas marcantes entre os arrozes vermelhos Oryza sativa L. e Oryza glaberrima Steud. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 10., 2017, Gramado, RS. Intensificação sustentável: anais. Gramado: Sosbai, 2017.| Biblioteca(s): Embrapa Cocais. |
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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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Circulação/Nível: |
A - 2 |
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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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