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	Provedor de dados Boletín de la Sociedad (1) Genet. Mol. Biol. (1) Autor Camadro,Elsa Lucila (2) Echeverría,María Lis (1) Pontaroli,Ana Clara (1) Palavra-chave 2n pollen (1) AFLP (1) Abnormal spindle orientation (1) DNA content (1) Fertility (1) Flow cytometry (1) Meiotic abnormalities (1) Meiotic behavior (1) Plant morphology (1) Ploidy (1) Polyploid cytotypes (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2017 (1) 2005 (1) País Argentina (1) Brazil (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Chromosome numbers, meiotic abnormalities, and 2n pollen formation in accessions of the wild species Chrysolaena flexuosa (Vernonieae, Compositae) from its distribution range in Argentina Boletín de la Sociedad Echeverría,María Lis; Camadro,Elsa Lucila. Chrysolaena flexuosa is a South American species of potential ornamental value (basic chromosome number of x=10). Diploid (n=10) and tetraploid (n=20) cytotypes have been reported for its distribution area, although one hexaploid (n=30-32ca.) cytotype has been reported for its most southern distribution. To investigate if ploidy and latitude are positively related in Ch. flexuosa natural populations and if sexual polyploidization could have had a role in the origin of the polyploid cytotypes, we determined chromosome numbers, DNA content, and pollen viability and size, and analyzed microsporogenesis in samples of seven Argentinian accessions. Two of the northeastern accessions were diploid and one was tetraploid, whereas the four southeastern accessions... Tipo: Info:eu-repo/semantics/article Palavras-chave: Polyploid cytotypes; DNA content; Flow cytometry; Meiotic abnormalities; Abnormal spindle orientation; 2n pollen. Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000400010 Somaclonal variation in Asparagus officinalis plants regenerated by organogenesis from long-term callus cultures Genet. Mol. Biol. Pontaroli,Ana Clara; Camadro,Elsa Lucila. Somaclonal variation in plants regenerated by organogenesis from long-term cultured calluses of two diploid staminate genotypes of Asparagus officinalis cv. Argenteuil was characterized by plant phenotype, ploidy, meiotic behavior, pollen viability, fruit and seed set, and AFLP profiles. Phenotypic deviations from the donors were detected in foliage color, flower size, and cladode and flower morphology. Ploidy changes were observed in 37.8% of the 37 regenerants studied. Meiotic alterations in 12 out of 21 regenerants included laggards, dicentric bridges, micronuclei, restitution nuclei and polyads. Of the 408 AFLP markers screened in 43 regenerants and the donors, 2.94% showed polymorphism. High pollen viability was observed in the 22 regenerants... Tipo: Info:eu-repo/semantics/article Palavras-chave: AFLP; Fertility; Plant morphology; Meiotic behavior; Ploidy. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300015 Registros recuperados: 2 Primeira ... 1 ... Última

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