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	Provedor de dados Acta Amazonica (1) Rev. Bras. Bot. (1) Autor BRAGA,MARCIA R. (1) HAHN,MICHAEL G. (1) MORAES,FABIO (1) Sampaio,Paulo de Tarso Barbosa (1) Santos,Ronaldo Pereira (1) Spironello,Wilson Roberto (1) Mais... Palavra-chave Amazonian tree (2) Bathysa meridionalis (1) Cell-wall polysaccharides (1) Cinchonoideae (1) Dialypetalanthaceae (1) Gene flow (1) Genetic diversity (1) RAPD (1) Rubiaceae (1) Seed dispersal (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2008 (1) 2001 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Comparative analysis of leaf cell-wall polysaccharides of Dialypetalanthus fuscescens and Bathysa meridionalis: evidence of biochemical similarities between Dialypetalanthaceae and Rubiaceae-Cinchonoideae Rev. Bras. Bot. MORAES,FABIO; HAHN,MICHAEL G.; BRAGA,MARCIA R.. Dialypetalanthus fuscescens is an Amazonian endemic species with problematic taxonomic position. This neotropical rainforest tree belongs to the monospecific Dialypetalanthaceae. In the present work, we analysed the leaf cell-wall polysaccharide composition of Dialypetalanthus fuscescens and compared it to that of Bathysa meridionalis (Rubiaceae-Cinchonoideae). Glycosyl composition and glycosyl-linkage analysis indicated that both species have similar cell wall composition. Arabinogalactans were the major component of the pectic polysaccharides and xylans, although being reported in minor amounts in dicots, were found to be the predominant hemicellulosic polysaccharide in cell walls of both species. These findings are in agreement with previous data on... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dialypetalanthaceae; Amazonian tree; Bathysa meridionalis; Rubiaceae; Cinchonoideae; Cell-wall polysaccharides. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300007 Genetic diversity in rosewood saplings (Aniba rosaeodora ducke, Lauraceae): an ecological approach Acta Amazonica Santos,Ronaldo Pereira; Spironello,Wilson Roberto; Sampaio,Paulo de Tarso Barbosa. This article takes an ecological approach to the genetic diversity of Rosewood (Aniba rosaeodora Ducke) in a central Amazonian terra firme forest north of Manaus. Planted Rosewood setting, under partial shaded canopy, were assessed in terms of fruiting production, frugivory, and seed dispersal. Using RAPD molecular analysis procedures, the influence of the spatial distribution of adult trees on the genetic diversity (polymorphism) of saplings was assessed with genetic samples from 34 reproductive trees and 60 saplings. The density and distribution patterns the reproductive trees did not modify the sapling"s diversity (1.86%, AMOVA). Two types of adult tree dispersion were identified; i) clumped and ii) more widely dispersed. Polymorphism (77.5%) and gene... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian tree; RAPD; Seed dispersal; Gene flow; Genetic diversity. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672008000400014 Registros recuperados: 2 Primeira ... 1 ... Última

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