Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/39005
Título: Karyotipic asymmetry of both wild and cultivated species of pennisetum
Título(s) alternativo(s): Assimetria cariotípica de espécies silvestres e cultivadas de pennisetum
Palavras-chave: Pennisetum purpureum
Pennisetum glaucum
Germplasm
Karyotype
Germoplasma
Cariótipo
Data do documento: 2010
Editor: Instituto Agronômico de Campinas
Citação: TECHIO, V. H.; DAVIDE, L. C.; CAGLIARI, A.; BARBOSA, S.; PEREIRA, A. V. Karyotipic asymmetry of both wild and cultivated species of pennisetum. Bragantia, Campinas, v. 69, n. 2, p. 273-279, 2010.
Resumo: This study aimed the establishment of the relation between karyotipic asymmetry values obtained for different accessions of both wild and cultivated species of Pennisetum from Germplasm Bank of Embrapa Gado de Leite/Juiz de Fora-Minas Gerais State, Brazil. Conventional cell cycle synchronization protocols and Feulgen staining method were used to obtain metaphases plates. The wild-type accessions corresponded to the species P. setosum (2n=6x=54), P. nervosum (2n=4x=36), and P. orientale (2n=4x=36), and the cultivated to P. purpureum (2n=4x=28) and P. glaucum (2n=2x=14). No significant difference was found for the total length of chromosomes (p>0.05) among the species. The analysis of intra-chromosomal asymmetry (A1) and inter-chromosomal asymmetry (A2) has shown that P. setosum has a tendency to chromosome asymmetry. P. nervosum, P. orientale, and P. purpureum have presented an intermediary level of asymmetry and P. glaucum, low asymmetry. Considering Stebbins criteria, the karyotype of P. glaucum and those from the three wild species fitted into the category 1A-symmetrical. With regard to P. purpureum, karyotypes of the accessions BAGs 54, 65 and 91 fitted into the category 2B and the other two genotypes (BAGs 63 and 75) fitted into the 1A. Comparison between the karyotype classification according to the inter- and intra-chromosomal asymmetry and Stebbins methodologies revealed that this last one alone was not able to detect small variations between karyotypes of the taxa closely related.
URI: http://repositorio.ufla.br/jspui/handle/1/39005
Aparece nas coleções:DBI - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
ARTIGO_Karyotipic asymmetry of both wild and cultivated species of pennisetum.pdf303,5 kBAdobe PDFVisualizar/Abrir


Este item está licenciada sob uma Licença Creative Commons Creative Commons