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	Provedor de dados Infoteca-e (1) Palavra-chave Capim-gengibre. (1) Defensivo (1) Doença de Planta (1) Erva Daninha (1) Erva do campo (1) Maria-maria (1) Vassourinha. (1) Mais... Tipo do documento Fôlder / Folheto / Cartilha (INFOTECA-E) (1) Ano 2008 (1) País Brazil (1) Idioma Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 22 Primeira ... 1 2 ... Última Meiotic behavior during microsporogenesis of Alchornea triplinervia (Sprengel) Müller Argoviensis Ciência Rural Godoy,Sara Mataroli de; Pereira,Andréia Rodrigues Alonso; Romagnolo,Mariza Barion; Risso-Pascotto,Claudicéia. The Alchornea triplinervia specie belongs to the Euphorbiaceae family, one of the main families of the Brazilian flora. In order to contribute to a better understanding of the specie, a counting of chromosome number and the microsporogenesis analysis of A. triplinervia were done. The inflorescences were collected in the municipalities of Paranavaí and Diamante do Norte, State of Paraná, Brazil, and the slides were prepared by squashing technique and staining with 1% acetic carmine. The analysis were performed using an optical microscope and showed a chromosome number for the specie equal to 2n=8x=72. Irregularities in the chromosome segregation process were the main meiotic abnormalities, presenting typical polyploid behavior. Other irregularities were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Euphorbiaceae; Chromosome number; 2n gametes; Meiosis; Polyploid. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000600012 Induction and identification of polyploids in Cattleya intermedia Lindl. (orchidaceae) by in vitro techniques Ciência Rural Silva,Paulo Artur Konzen Xavier de Mello e; Callegari-Jacques,Sídia; Bodanese-Zanettini,Maria Helena. The effect of colchicine on the protocorm-like bodies of Cattleya intermedia L. (Orchidaceae) cultured in vitro was studied. Different concentrations of the drug (0.00, 0.05, 0.10 and 0.20%) as well as two times of culture (4 or 8 days) were tested to determine the best treatment for the induction of tetraploid plants. Of the 3 colchicine levels applied, 0.05 and 0.10% of drug treatments appeared to be effective on the production of mixoploids and tetraploids and could be further used in breeding programs. The suitability of stomatal area and stomata density as criteria for the distinction between diploids and tetraploids was also tested. The results suggested that tetraploid plants could be identified with a fair amount of certainty when the screening was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cattleya; Colchicine; Chromosome number; Orchid improvement; Polyploidy; Stomata analysis. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782000000100017 Registros recuperados: 22 Primeira ... 1 2 ... Última

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