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16. | | 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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20. | | SERRÃO, D. R.; CARVALHO, C. J. R. de. Efeito da deficiência hídrica sobre o metabolismo do jaborandi (Pillocarpus microphylus, Strarf.). In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA CNPq/FCAP/EMBRAPA, 6., 1996, Belém, PA. Resumos. Belém, PA: FCAP, 1996. p. 86, 154. Biblioteca(s): Embrapa Amazônia Oriental. |
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Registros recuperados : 193 | |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Unidades Centrais. |
Data corrente: |
30/04/2001 |
Data da última atualização: |
25/01/2021 |
Autoria: |
DIAS FILHO, M. B.; CARVALHO, C. J. R. de. |
Afiliação: |
MOACYR BERNARDINO DIAS FILHO, CPATU; CLAUDIO JOSE REIS DE CARVALHO, CPATU. |
Título: |
Physiological and morphological responses of brachiaria spp. to flooding. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 10, p. 1959-1966, out. 2000. |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Chlorophyle; Growth rate. |
Thesagro: |
Área Foliar; Biomassa; Brachiaria Brizantha; Brachiaria Decumbens; Brachiaria Humidicola; Clorofila; Fisiologia Vegetal; Fotossíntese; Taxa de Crescimento. |
Thesaurus NAL: |
Biomass; Chlorophyll; Leaf area; Photosynthesis; plant physiology. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/18815/1/pab99_017.pdf
|
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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