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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Unidades Centrais. |
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Data corrente: |
30/04/2001 |
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Data da última atualização: |
25/01/2021 |
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Autoria: |
DIAS FILHO, M. B.; CARVALHO, C. J. R. de. |
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Afiliação: |
MOACYR BERNARDINO DIAS FILHO, CPATU; CLAUDIO JOSE REIS DE CARVALHO, CPATU. |
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Título: |
Physiological and morphological responses of brachiaria spp. to flooding. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 10, p. 1959-1966, out. 2000. |
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Idioma: |
Inglês |
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Conteúdo: |
The physiological and morphological responses of the forage grasses Brachiaria brizantha cv. Marandu, B. decumbens and B. humidicola were compared for plants grown in pots under flooding and well-drained conditions for 14 days. Flooding reduced specific leaf area and biomass allocation to roots in all species and enhanced leaf senescence in B. brizantha and B. decumbens. Relative growth rate was reduced by flooding in B. brizantha and B. decumbens, but not in B. humidicola. Leaf elongation rate was unaffected by flooding in B. decumbens and B, humidicola, but declined in B. brizantha since the first day of flooding. Net photosynthesis and leaf chlorophyll content were reduced by flooding in B, brizantha; however, no flooding effect could be detected in the other two species. For all species, there was a close relationship between net photosynthesis and stomatal conductance under flooding. These results show that the studied species have distinct degrees of tolerance to flood, B. brizantha is intolerant, B. decumbens is moderately tolerant and B. humidicola is tolerant. Because leaf elongation rate was immediately depressed by flooding only in B. brizantha, this measurement could be appropriate as an early detection mechanism for relative flood tolerance in Brachiaria spp. |
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Palavras-Chave: |
Chlorophyle; Growth rate. |
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Thesagro: |
Área Foliar; Biomassa; Brachiaria Brizantha; Brachiaria Decumbens; Brachiaria Humidicola; Clorofila; Fisiologia Vegetal; Fotossíntese; Taxa de Crescimento. |
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Thesaurus Nal: |
Biomass; Chlorophyll; Leaf area; Photosynthesis; plant physiology. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/18815/1/pab99_017.pdf
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Marc: |
LEADER 02210naa a2200325 a 4500
001 1373170
005 2021-01-25
008 2000 bl uuuu u00u1 u #d
100 1 $aDIAS FILHO, M. B.
245 $aPhysiological and morphological responses of brachiaria spp. to flooding.
260 $c2000
520 $aThe physiological and morphological responses of the forage grasses Brachiaria brizantha cv. Marandu, B. decumbens and B. humidicola were compared for plants grown in pots under flooding and well-drained conditions for 14 days. Flooding reduced specific leaf area and biomass allocation to roots in all species and enhanced leaf senescence in B. brizantha and B. decumbens. Relative growth rate was reduced by flooding in B. brizantha and B. decumbens, but not in B. humidicola. Leaf elongation rate was unaffected by flooding in B. decumbens and B, humidicola, but declined in B. brizantha since the first day of flooding. Net photosynthesis and leaf chlorophyll content were reduced by flooding in B, brizantha; however, no flooding effect could be detected in the other two species. For all species, there was a close relationship between net photosynthesis and stomatal conductance under flooding. These results show that the studied species have distinct degrees of tolerance to flood, B. brizantha is intolerant, B. decumbens is moderately tolerant and B. humidicola is tolerant. Because leaf elongation rate was immediately depressed by flooding only in B. brizantha, this measurement could be appropriate as an early detection mechanism for relative flood tolerance in Brachiaria spp.
650 $aBiomass
650 $aChlorophyll
650 $aLeaf area
650 $aPhotosynthesis
650 $aplant physiology
650 $aÁrea Foliar
650 $aBiomassa
650 $aBrachiaria Brizantha
650 $aBrachiaria Decumbens
650 $aBrachiaria Humidicola
650 $aClorofila
650 $aFisiologia Vegetal
650 $aFotossíntese
650 $aTaxa de Crescimento
653 $aChlorophyle
653 $aGrowth rate
700 1 $aCARVALHO, C. J. R. de
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 35, n. 10, p. 1959-1966, out. 2000.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 182 | |
| 21. |  | SERRÃO, D. N.; CARVALHO, C. J. R. de. Respostas metabólicas de timbó (Derris urucu), submetido a diferentes níveis de deficiência hídrica. In: SEMINÁRIO DE INICIAÇÃO CIENTIFICA DA FCAP, 7.; SEMINÁRIO DE INICIAÇÃO CIENTIFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 1., 1997, Belém, PA. Resumos. Belém, PA: FCAP, 1997. p. 167.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 23. | | SERRÃO, D. R.; CARVALHO, C. J. R. de. Tolerância ao calor e ao défice hídrico dos tecidos foliares de quatro espécies de plantas medicinais da Amazônia. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 5., 1995, Belém, PA. Resumos... Belém, PA: FCAP, Unidade de Apoio à Pesquisa, 1995. p. 37, 141.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 24. | | SILVA, I. C.; CARVALHO, C. J. R. de. O sombreamento do cacaueiro (Theobroma cacao L.) na Amazônia brasileira. In: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU, 1986. v. 4, p. 443-449. (EMBRAPA-CPATU. Documentos, 36). v.4 Culturas perenes.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 35. | | SERRÃO, B. de O.; CARVALHO, C. J. R. de; DUTRA, F. C. Carbono e nitrogênio da biomassa microbiana em cronoseqüência de vegetação secundária no nordeste paraense. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFRA, 4.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 10., 2007, Belém, PA. Anais... Belém, PA: UFRA: Embrapa Amazônia Oriental, 2007. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 36. | | ARAGÃO, D. V. de; CARVALHO, C. J. R. de; KATO, O. R.; MOURÃO JUNIOR, M. Alternativa de base ecológica para melhoria da fertilidade do solo e da produção agrícola no sistema de corte-e-trituração, no Nordeste Paraense. Cadernos de Agroecologia, Porto Alegre, RS, v. 6, n. 2, dez. 2011. Trabalho apresentado no CONGRESSO BRASILEIRO DE AGROECOLOGIA, 7., 2011, Fortaleza, CE. Resumo nº 11173.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 182 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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