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	Provedor de dados Biocell (3) Boletín de la Sociedad (1) Autor Rosenfeldt,Sonia (4) Galati,Beatriz G (1) Galati,Beatriz G. (1) Galati,Beatriz Gloria (1) López,Alicia (1) Palavra-chave Oxalis (4) Pollen (3) Argentina (1) Chile (1) Embryology (1) Micromorfología (1) Morphology (1) Ontogeny (1) Orbicules (1) Patagonia (1) Structure (1) Taxonomy (1) Ubisch bodies (1) Utrastructure (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2015 (1) 2008 (1) 2007 (1) 2005 (1) País Argentina (4) Idioma Inglês (3) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Pollen morphology of Oxalis species from Buenos Aires province (Argentina) Biocell Rosenfeldt,Sonia; Galati,Beatriz G. Pollen morphology and the degree of pollen variability within nine species and two varieties of Oxalis species from Buenos Aires Province (Argentina) were studied using light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Oxalis pollen grain is generally 3-colpate and the shape is prolate spheroidal, oblate spheroidal or spheroidal. The exine is microreticulate. The brochi are circular to polygonal; brochi sizes decrease near the colpi. The colpus membrane observed in unacetolysed material, is crustate or granular. The colpus length varies within a species; the largest grains are produced in stamens with long filaments and the smallest ones in stamens with short filaments. Four pollen types are distinguished... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pollen; Oxalis; Morphology; Structure. Ano: 2007 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452007000100002 Ubisch bodies and pollen ontogeny in Oxalis articulata Savigny Biocell Rosenfeldt,Sonia; Galati,Beatriz G.. The correlation between the ontogeny of Ubisch bodies and pollen development in Oxalis articulata was studied with Transmission Electron Microscopy (TEM). The ultrastructural changes observed during the different stages of development in the tapetal cells are related to Ubisch bodies, sporopollenin and pollen-kitt formation. The pro-orbicules have the appearance of lipid globuli and their formation is related to the endoplasmic reticulum of rough type (ERr). The lipid globules or pro-orbicules disappear in the mature Ubisch bodies, and the places that they occupied remain free of contents or with pollen-kitt. Tipo: Info:eu-repo/semantics/article Palavras-chave: Pollen; Ubisch bodies; Ontogeny; Utrastructure; Oxalis. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000300004 Orbicules diversity in Oxalis species from the province of Buenos Aires (Argentina) Biocell Rosenfeldt,Sonia; Galati,Beatriz Gloria. Eleven Oxalis L. species from the province of Buenos Aires (Argentina) were investigated with scanning and transmission electron microscopes. We identified four different types and two subtypes of orbicules. We conclude that the close morphological similarity between these species is also reflected in their orbicules, and we suggest that the orbicules morphology may be a useful character in systematic studies. Tipo: Info:eu-repo/semantics/article Palavras-chave: Embryology; Orbicules; Oxalis; Taxonomy; Pollen. Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452008000100005 Oxalis Sect. Palmatifoliae (Oxalidaceae): Morfología de los granos de polen y diversidad de las orbículas Boletín de la Sociedad López,Alicia; Rosenfeldt,Sonia. La morfología del polen y las características de las orbículas fueron estudiadas en todas las especies de Oxalis sección Palmatifoliae, endémica del sur de Sudamérica, empleando microscopio óptico (M.O.) y microscopio electrónico de barrido (M.E.B.). Los granos de polen son 3-colpados, de forma prolato esferoidales, oblato esferoidales o esferoidales. La exina es microrreticulada. Lúmen circular a poligonal; disminuyendo de tamaño hacia los polos. Las orbículas están dispersas irregularmente en la superficie interna de las anteras; son generalmente aplanadas, redondeadas o con forma de “dona”, de superficie lisa. La homogeneidad observada en la morfología de granos de polen de las especies de Oxalis sección Palmatifoliae refuerza la... Tipo: Info:eu-repo/semantics/article Palavras-chave: Argentina; Chile; Patagonia; Micromorfología; Oxalis. Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722015000300007 Registros recuperados: 4 Primeira ... 1 ... Última

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