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	Provedor de dados BABT (2) Autor Pereira,Telma Nair Santana (2) Ribeiro,Beatriz Ferreira (2) Costa,Fabiane Rabelo da (1) Damasceno Junior,Pedro Correa (1) Dias,Angelo José Burla (1) Freitas,Noil Gomes de (1) Pereira,Messias Gonzaga (1) Santos,Lídia Márcia Silva (1) Souza,Margarete Magalhães (1) Souza,Margarete Magalhães de (1) Viana,Alexandre Pio (1) Mais... Palavra-chave Anatomy (1) Carica papaya (1) Cytochemistry (1) Histochemistry (1) Microgametogenesis (1) Microsporogenesis (1) Pollen grain (1) Stigma and style (1) Ultrastructure (1) Yellow passionfruit (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2008 (1) 2006 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Optical and ultrastructural study of the pollen grain development in hermaphrodite papaya tree (Carica papaya L.) BABT Santos,Lídia Márcia Silva; Pereira,Telma Nair Santana; Souza,Margarete Magalhães de; Damasceno Junior,Pedro Correa; Costa,Fabiane Rabelo da; Ribeiro,Beatriz Ferreira; Freitas,Noil Gomes de; Pereira,Messias Gonzaga. The objective of this study was to describe the pollen grain development in hermaphrodite papaya tree. The flower buds were collected at different stages of the development and the anthers were treated chemically for observation under optical and electronic transmission microscopes. The pollen grain development followed the normal pattern described for the Angiosperms. The pollen grain development was described from meiocyte to the mature pollen grain. In the microsporogenesis, the microspore mother cells or the meiocytes underwent meiosis giving rise to the tetrads that were enclosed by the calose. Later, the tetrads were released by the dissolution of the calose by calase activity and microspores underwent mitosis. Microgametogenesis was characterized by... Tipo: Info:eu-repo/semantics/article Palavras-chave: Carica papaya; Microsporogenesis; Microgametogenesis; Pollen grain; Ultrastructure. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300013 Structural, hystochemical and cytochemical characteristics of the stigma and style in Passiflora edulis f. flavicarpa (Passifloraceae) BABT Souza,Margarete Magalhães; Pereira,Telma Nair Santana; Dias,Angelo José Burla; Ribeiro,Beatriz Ferreira; Viana,Alexandre Pio. Studies were carried out on anatomic aspects of the stigma and style of yellow passionfruit. The stigmatic style consisted of papillae, many layers of sub-epidermal cells and a central transmitting tissue. The stigma was of dry, unbranched, multicellular multiseriate papillate type and the cells were highly vacuolated with walls that were relatively thin consisting of compactly arranged fibrils. The style was solid with a central core of transmitting tissue that had intercellular spaces containing a matrix that included polysaccharidic and lipidic substances. During development, cells of the transmitting tissue were arranged compactly while the mature pistil showed cells with a little more loosely arranged intercellular spaces. Both the mature stigma and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Yellow passionfruit; Anatomy; Stigma and style; Histochemistry; Cytochemistry. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100011 Registros recuperados: 2 Primeira ... 1 ... Última

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