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Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
27/03/1996 |
Data da última atualização: |
27/03/1996 |
Autoria: |
SIDERIS, S. P.; KRAUSS, B. H. |
Afiliação: |
University of Hawaiti. |
Título: |
Growth phenomena of pineapple fruits. |
Ano de publicação: |
1938 |
Fonte/Imprenta: |
Preprinted from Growth, v.2, n.2, p.181-196, 1938. |
Idioma: |
Inglês |
Conteúdo: |
Data on the growth of pineapple fruits have appeared from time to time in a few publications. No mathematical analysis of such data demonstrating the nature of the growth of these fruits has appeared. In the present paper, values for the volumes and for weights of whole fruits, for fruitlets and for such sections of the fruits as flesh, shell and core are presented. The object of the paper is to show the nature of the growth of pineapple fruits and the time required for the core, shell and flesh of such fruits to complete growth and reach maturity. |
Palavras-Chave: |
Fruit veights; Maturation; Peso do fruto; Smooth cayenne. |
Thesagro: |
Abacaxi; Crescimento; Fisiologia; Maturação. |
Thesaurus Nal: |
Hawaii. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01144naa a2200241 a 4500 001 1647529 005 1996-03-27 008 1938 bl --- 0-- u #d 100 1 $aSIDERIS, S. P. 245 $aGrowth phenomena of pineapple fruits. 260 $c1938 520 $aData on the growth of pineapple fruits have appeared from time to time in a few publications. No mathematical analysis of such data demonstrating the nature of the growth of these fruits has appeared. In the present paper, values for the volumes and for weights of whole fruits, for fruitlets and for such sections of the fruits as flesh, shell and core are presented. The object of the paper is to show the nature of the growth of pineapple fruits and the time required for the core, shell and flesh of such fruits to complete growth and reach maturity. 650 $aHawaii 650 $aAbacaxi 650 $aCrescimento 650 $aFisiologia 650 $aMaturação 653 $aFruit veights 653 $aMaturation 653 $aPeso do fruto 653 $aSmooth cayenne 700 1 $aKRAUSS, B. H. 773 $tPreprinted from Growth$gv.2, n.2, p.181-196, 1938.
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Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
24/08/2012 |
Data da última atualização: |
20/02/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
MARICHAL, R.; GRIMALDI, M.; MATHIEU, J.; BROWN, G. G.; SILVA JUNIOR, M. L. da; PRAXEDES, C.; MARTINS, M. B.; VELASQUEZ, E.; LAVELLE, P. |
Afiliação: |
RAPHAEL MARICHAL, Museu Paraense Emilio Goeldi; MICHEL GRIMALDI, RD, UMR Bioemco; JEROME MATHIEU, UPMC Université Paris; GEORGE GARDNER BROWN, CNPF; MARIO LOPES DA SILVA JUNIOR, UFRA; CATARINA PRAXEDES, Museu Paraense Emilio Goeldi; MARLUCIA B. MARTINS, Museu Paraense Emilio Goeldi; ELENA VELASQUEZ, Universidad Nacional de Colombia; PATRICK LAVELLE, Centro Internacional de Agricultura Tropical (CIAT). |
Título: |
Is invasion of deforested Amazonia by the earthworm Pontoscolex corethrurus driven by soil texture and chemical properties? |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Pedobiologia, v. 55, p. 233-240, 2012. |
Idioma: |
Inglês |
Conteúdo: |
Pontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm communities could potentially also be key elements for understanding why P. corethrurus populations occur in some sites and not in others. MenosPontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm c... Mostrar Tudo |
Thesagro: |
Minhoca. |
Thesaurus NAL: |
Amazonia; Pontoscolex corethrurus. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02376naa a2200253 a 4500 001 1932145 005 2015-02-20 008 2012 bl uuuu u00u1 u #d 100 1 $aMARICHAL, R. 245 $aIs invasion of deforested Amazonia by the earthworm Pontoscolex corethrurus driven by soil texture and chemical properties?$h[electronic resource] 260 $c2012 520 $aPontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm communities could potentially also be key elements for understanding why P. corethrurus populations occur in some sites and not in others. 650 $aAmazonia 650 $aPontoscolex corethrurus 650 $aMinhoca 700 1 $aGRIMALDI, M. 700 1 $aMATHIEU, J. 700 1 $aBROWN, G. G. 700 1 $aSILVA JUNIOR, M. L. da 700 1 $aPRAXEDES, C. 700 1 $aMARTINS, M. B. 700 1 $aVELASQUEZ, E. 700 1 $aLAVELLE, P. 773 $tPedobiologia$gv. 55, p. 233-240, 2012.
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