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	Provedor de dados Acta Botanica (1) Genet. Mol. Biol. (1) Autor Souza,Luiz Gustavo (2) Cordeiro,Joel M.P. (1) Felix,Leonardo P. (1) Guerra,Miguel Pedro (1) Kaehler,Miriam (1) Pescador,Rosete (1) Zappelini,Julia (1) Mais... Palavra-chave Polyploidy (2) CMA/DAPI (1) Chromosome number (1) Chusquea (1) Cytogenetics (1) Diploidization (1) Evolution (1) Guadua (1) Handroanthus (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2020 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Heterochromatin and numeric chromosome evolution in Bignoniaceae, with emphasis on the Neotropical clade Tabebuia alliance Genet. Mol. Biol. Cordeiro,Joel M.P.; Kaehler,Miriam; Souza,Luiz Gustavo; Felix,Leonardo P.. Abstract Bignoniaceae is a diverse family composed of 840 species with Pantropical distribution. The chromosome number 2n = 40 is predominant in most species of the family, with n = 20 formerly being considered the haploid base number. We discuss here the haploid base number of Bignoniaceae and examine heterochromatin distributions revealed by CMA/DAPI fluorochromes in the Tabebuia alliance, as well as in some species of the Bignonieae, Tecomeae, and Jacarandeae tribes. When comparing the chromosome records and the phylogenies of Bignoniaceae it can be deduced that the base number of Bignoniaceae is probably n = 18, followed by an ascendant dysploidy (n = 18 → n = 20) in the most derived and diverse clades. The predominant heterochromatin banding patterns... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromosome number; CMA/DAPI; Handroanthus; Polyploidy. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100303 First cytomolecular characterization of three Neotropical woody bamboos (Bambusoideae, Poaceae) suggests ancient diploidized karyotypes Acta Botanica Zappelini,Julia; Souza,Luiz Gustavo; Guerra,Miguel Pedro; Pescador,Rosete. ABSTRACT Although karyotype features are useful data for evolutionary studies, cytogenetic data in Bambusoideae are mainly based only on chromosome counts. The first comparative cytogenetic analysis of three Neotropical woody bamboo species - Guadua chacoensis, G. angustifolia and Chusquea tenella - was undertaken based on new and reviewed chromosome counts, CMA/DAPI double staining, fluorescent in situ hybridization (FISH) with 35S and 5S rDNA probes, and genome size estimation. The two species of Guadua were found to have 2n = 46 chromosomes, while the first record for C. tenella was 2n = 44. Only one pair of CMA+/DAPI- was detected on the terminal region of metacentric chromosomes in all three species. Likewise, one pair of 5S and 35S rDNA sites was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chusquea; Cytogenetics; Diploidization; Evolution; Guadua; Polyploidy. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400673 Registros recuperados: 2 Primeira ... 1 ... Última

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