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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
06/10/2003 |
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Data da última atualização: |
06/10/2003 |
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Autoria: |
MOREIRA, A. G.; KLINK, C. A. |
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Título: |
Biomass allocation and growth of tree seedlings from two contrasting Brazilian savannas. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Ecotropicos, v. 13, n.1, p. 43-51, 2000. |
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Idioma: |
Inglês |
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Conteúdo: |
Growth and biomass allocation to roots and shoots of ten native trees of two contrasting savanna communities in central Brazil (Cerrado), differing in woody species density, was studied for up to seven months after germination. We compared three closed savanna woodland species with four open savanna species. Three other species were common to both savanna types. Root/shoot rations different greatly among species but no similar pattern of biomass allocation to roots and shoots was found between species of the same savanna type. After seven months of growth the woodland species Alibertia edulis. Rich had a root/shoot ratio smaller than one and the open savanna species Kielmeyera coriaceae (Sp.). Mart. a ratio equal to nine; the remaining species had values ranging from one to six, irrespective of savanna type. Relative growth rate (RGR) of early stage woodland seedlings (30-day old seedlings) was significantly different from open savanna seedlings (range between 0.059 and 0.192 mg mg-1 day-1 for the woodland species, and between 0.025 and 0.035 mg mg-1 day-1 for the open savanna species; common species had values ranging from one to six, irrespective of savanna type. Relative growth rate (RGR) of early stage, woodland seedlings (30-day old seedlings) was significantly different from open savanna seedlings (range between 0.059 and 0.192 mg mg-1 day-1 for the woodlands species, and between 0.025 and 0.035 mg mg-1 day-1 for the open savanna species had intermidiate vallues). For older seedlings (150-day old seedlings) differences disappear (RGR ranging between 0.013 and 0.030 mg mg-1 day-1 espective of savanna type). The high values of root /shoot ratios and root elongation of most species is probaly related to their capacity to withstand the dry season and resprout are fire. MenosGrowth and biomass allocation to roots and shoots of ten native trees of two contrasting savanna communities in central Brazil (Cerrado), differing in woody species density, was studied for up to seven months after germination. We compared three closed savanna woodland species with four open savanna species. Three other species were common to both savanna types. Root/shoot rations different greatly among species but no similar pattern of biomass allocation to roots and shoots was found between species of the same savanna type. After seven months of growth the woodland species Alibertia edulis. Rich had a root/shoot ratio smaller than one and the open savanna species Kielmeyera coriaceae (Sp.). Mart. a ratio equal to nine; the remaining species had values ranging from one to six, irrespective of savanna type. Relative growth rate (RGR) of early stage woodland seedlings (30-day old seedlings) was significantly different from open savanna seedlings (range between 0.059 and 0.192 mg mg-1 day-1 for the woodland species, and between 0.025 and 0.035 mg mg-1 day-1 for the open savanna species; common species had values ranging from one to six, irrespective of savanna type. Relative growth rate (RGR) of early stage, woodland seedlings (30-day old seedlings) was significantly different from open savanna seedlings (range between 0.059 and 0.192 mg mg-1 day-1 for the woodlands species, and between 0.025 and 0.035 mg mg-1 day-1 for the open savanna species had intermidiate vallues). For ... Mostrar Tudo |
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Thesagro: |
Biomassa; Cerrado; Crescimento; Plântula. |
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Categoria do assunto: |
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Marc: |
LEADER 02286naa a2200181 a 4500
001 1567198
005 2003-10-06
008 2000 bl --- 0-- u #d
100 1 $aMOREIRA, A. G.
245 $aBiomass allocation and growth of tree seedlings from two contrasting Brazilian savannas.
260 $c2000
520 $aGrowth and biomass allocation to roots and shoots of ten native trees of two contrasting savanna communities in central Brazil (Cerrado), differing in woody species density, was studied for up to seven months after germination. We compared three closed savanna woodland species with four open savanna species. Three other species were common to both savanna types. Root/shoot rations different greatly among species but no similar pattern of biomass allocation to roots and shoots was found between species of the same savanna type. After seven months of growth the woodland species Alibertia edulis. Rich had a root/shoot ratio smaller than one and the open savanna species Kielmeyera coriaceae (Sp.). Mart. a ratio equal to nine; the remaining species had values ranging from one to six, irrespective of savanna type. Relative growth rate (RGR) of early stage woodland seedlings (30-day old seedlings) was significantly different from open savanna seedlings (range between 0.059 and 0.192 mg mg-1 day-1 for the woodland species, and between 0.025 and 0.035 mg mg-1 day-1 for the open savanna species; common species had values ranging from one to six, irrespective of savanna type. Relative growth rate (RGR) of early stage, woodland seedlings (30-day old seedlings) was significantly different from open savanna seedlings (range between 0.059 and 0.192 mg mg-1 day-1 for the woodlands species, and between 0.025 and 0.035 mg mg-1 day-1 for the open savanna species had intermidiate vallues). For older seedlings (150-day old seedlings) differences disappear (RGR ranging between 0.013 and 0.030 mg mg-1 day-1 espective of savanna type). The high values of root /shoot ratios and root elongation of most species is probaly related to their capacity to withstand the dry season and resprout are fire.
650 $aBiomassa
650 $aCerrado
650 $aCrescimento
650 $aPlântula
700 1 $aKLINK, C. A.
773 $tEcotropicos$gv. 13, n.1, p. 43-51, 2000.
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 856 | |
| 103. |  | MOREIRA, A. G.; RIBEIRO, J. F.; JOLY, C. A. Aspectos da populacao de Emmotum nitens (Benth.) Miers (Icacinaciae) em um cerradao de solo distrofico, Brasilia, DF. In: CONGRESSO DA SOCIEDADE BOTANICA DE SAO PAULO, 5., 1985, Botucatu, SP. Programa e resumos. Botucatu: Sociedade Botanica de Sao Paulo, 1985. p.63. Resumo.| Biblioteca(s): Embrapa Cerrados. |
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| 111. | | MOREIRA, A.; BERNARDI, A. C. de C.; RASSINI, J. B. Correção do solo, estado nutricional e adubação da alfafa. In: FERREIRA, R. de P.; RASSINI, J. B.; RODRIGUES, A. de A.; FREITAS, A. R.; CAMARGO, A. C.; MENDONÇA, F. C. (Ed.). Cultivo e utilização da alfafa nos trópicos. São Carlos, SP: Embrapa Pecuária Sudeste, 2008. p. 95-137.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 113. | | MOREIRA, A.; MORAES, L. A. C.; FAGERIA, N. K. Variability on yield, nutritional status, soil fertility, and potassium-use efficiency by soybean cultivar in acidic soil. Communications in Soil Science and Plant Analysis, New York, v. 46, n. 19, p. 2490-2508, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 856 | |
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