Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Naturalis (2) Autor De Block, P. (2) Dessein, S. (2) Robbrecht, E. (2) Smets, E. (2) Davis, A.P. (1) Huysmans, S. (1) Lens, F. (1) Ochoterena, H. (1) Schols, P. (1) Tosh, J. (1) Vinckier, S. (1) Mais... Palavra-chave 42.58 (1) AccD-PSA1 (1) African flora (1) Molecular phylogenetics (1) Octotropideae (1) Palynology (1) Phylogeny (1) Placentation (1) Pollen morphology (1) Rpl16 (1) Rubiaceae (1) TrnL-F (1) Mais... Tipo do documento Article / Letter to the editor (2) Ano 2008 (1) 2005 (1) País Netherlands (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Palynological Characters and Their Phylogenetic Signal in Rubiaceae Naturalis Dessein, S.; Ochoterena, H.; De Block, P.; Lens, F.; Robbrecht, E.; Schols, P.; Smets, E.; Vinckier, S.; Huysmans, S.. In the 1990s Rubiaceae became a hot spot for systematists, mainly due to the comprehensive treatment of the family by Robbrecht in 1988. Next to the exploration of macromolecular characters to infer the phylogeny, the palynology of Rubiaceae finally received the attention it deserves. This article aims to present a state-of-the-art analysis of the systematic palynology of the family. The range of variation in pollen morphology is wide, and some of the pollen features are not known from other angiosperm taxa; e.g., a looplike or spiral pattern for the position of apertures in pantoaperturate grains. We compiled an online database at the generic level for the major pollen characters and orbicule presence in Rubiaceae. An overview of the variation is... Tipo: Article / Letter to the editor Palavras-chave: Rubiaceae; Pollen morphology; Palynology; Phylogeny. Ano: 2005 URL: http://www.repository.naturalis.nl/record/407298 The tribal placement of the monospecific tropical African genus Petitiocodon (Rubiaceae) based on molecular data and morphology Naturalis Tosh, J.; De Block, P.; Davis, A.P.; Dessein, S.; Robbrecht, E.; Smets, E.. A first phylogenetic placement of Petitiocodon based on molecular sequence data from three plastid regions (accD-psa1, rpl16 and trnL-F) is presented, in conjunction with a reassessment of morphology for the genus. Our results do not support an evolutionary affinity between Petitiocodon and Tricalysia (Coffeeae) as suggested by previous studies, but they confirm other research that Petitiocodon and Didymosalpinx are distinct genera. Placement of Petitiocodon in tribe Octotropideae is well-supported on the basis of molecular data and floral and carpological characters. Tipo: Article / Letter to the editor Palavras-chave: Octotropideae; African flora; AccD-PSA1; Rpl16; TrnL-F; Molecular phylogenetics; Placentation; 42.58. Ano: 2008 URL: http://www.repository.naturalis.nl/record/449521 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco