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	Provedor de dados Acta Botanica (2) Autor Freitas,Cesar Carvalho de (2) Oliveira,João Marcelo Santos de (2) Carvalho,Jordano Dorval Tavares de (1) Dorneles,Mariane Paludette (1) Martins,Merielem Saldanha (1) Martins,Meriélem Saldanha (1) Mais... Palavra-chave Anatomy (1) Androecium (1) Anther (1) Carbohydrates (1) Common tube (1) Connective (1) Development (1) Dyckia (1) Endothecial thickening (1) Microgametogenesis (1) Microsporogenesis (1) Sporangium (1) Stamen vasculature (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (1) 2015 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Starch distribution in anthers, microspores and pollen grains in Aechmea recurvata (Klotzsch.) L.B.Sm., Dyckia racinae L.B.Sm. and Tillandsia aeranthos (Loisel.) L.B.Sm. (Bromeliaceae) Acta Botanica Oliveira,João Marcelo Santos de; Martins,Merielem Saldanha; Dorneles,Mariane Paludette; Freitas,Cesar Carvalho de. This paper presents a comparative description of the starch distribution in the anthers, microspores and pollen grains of Aechmea recurvata, Dyckia racinae and Tillandsia aeranthos. Flowers at different stages of development were processed according to plant microtechniques for observation by light microscope. Ten stages of embryological development were used as references for the comparative analysis of starch distribution and dynamics. The structural data showed a greater starch accumulation in the parietal layers and connective of D. racinae. It was observed that in the species studied, starch began to accumulate in microspore mother cell stage. The pollen grains in D. racinae and in T. aeranthos present two amylogenesis-amylolysis cycles, while A.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbohydrates; Development; Microgametogenesis; Microsporogenesis; Sporangium. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100103 Stamen morphoanatomy of Dyckia Schult.f. (Bromeliaceae, Pitcairnioideae) species: new data for taxonomic use Acta Botanica Carvalho,Jordano Dorval Tavares de; Oliveira,João Marcelo Santos de; Freitas,Cesar Carvalho de; Martins,Meriélem Saldanha. ABSTRACT This study presents a morphoanatomical analysis of Dyckia ibicuiensis , D. polyclada and D. racinae stamens. Flowers at anthesis were desiccated and their stamens were processed using common light microscopic techniques. Morphologically, the androecium in these species is differentiated by the disposition of the stamens around the gynoecium and by general anther characteristics. Included stamens, with antesepalous filaments different from those of the antepetalous, anthers in a radial disposition, always curved, and sporangia facing the gynoecium characterize D. ibicuiensis and D. racinae . This configuration results from the filament connation, as well as special anatomical characteristics of the anthers, such as the connective with thickenings.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anatomy; Androecium; Anther; Common tube; Connective; Dyckia; Endothecial thickening; Stamen vasculature. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300389 Registros recuperados: 2 Primeira ... 1 ... Última

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