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dc.creatorLeão, Fernando Ferreira-
dc.creatorDavide, Lisete Chamma-
dc.creatorCampos, José Marcello Salabert de-
dc.creatorPereira, Antonio Vander-
dc.creatorBustamante, Fernanda de Oliveira-
dc.date.accessioned2019-01-15T14:05:33Z-
dc.date.available2019-01-11-
dc.date.available2019-01-15T14:05:33Z-
dc.date.issued2011-
dc.citation.volume46pt_BR
dc.citation.issue7pt_BR
dc.citation.spage712pt_BR
dc.citation.epage719pt_BR
dc.identifier.doihttp://dx.doi.org/10.1590/S0100-204X2011000700006pt_BR
dc.identifier.urihttps://repositorio.ufjf.br/jspui/handle/ufjf/8455-
dc.description.abstractThe objective of this work was to evaluate the genomic behavior of hybrid combinations between elephant grass (Pennisetum purpureum) and pearl millet (P. glaucum). Tetraploid (AAA'B) and pentaploid (AA'A'BB) chromosome races resulting from the backcross of the hexaploid hybrid to its parents elephant grass (A'A'BB) and pearl millet (AA) were analyzed as to chromosome number and DNA content. Genotypes of elephant grass, millet, and triploid and hexaploid induced hybrids were compared. Pentaploid and tetraploid genomic combinations showed high level of mixoploidy, in discordance with the expected somatic chromosome set. The pentaploid chromosome number ranged from 20 to 34, and the tetraploid chromosome number from 16 to 28. Chromosome number variation was higher in pentaploid genomic combinations than in tetraploid, and mixoploidy was observed among hexaploids. Genomic combinations 4x and 5x are mixoploid, and the variation of chromosome number within chromosomal race 5x is greater than in 4x.pt_BR
dc.description.resumoO objetivo deste trabalho foi avaliar o comportamento genômico de combinações híbridas resultantes do cruzamento entre capim-elefante (Pennisetum purpureum) e milheto (P. glaucum). Raças cromossômicas tetraploides (AAA'B) e pentaploides (AA'A'BB), resultantes do retrocruzamento do híbrido hexaploide com seus parentais capim-elefante (A'A'BB) e milheto (AA), foram avaliadas quanto ao número cromossômico e ao conteúdo de DNA. Foram comparados os genótipos de capim-elefante, milheto e de híbridos triploides e hexaploides induzidos. As combinações genômicas pentaploides e tetraploides mostraram elevado grau de mixoploidia, em desacordo com o complemento cromossômico somático esperado. O número cromossômico dos pentaploides variou de 20 a 34, e o dos tetraploides de 16 a 28. A variação do número cromossômico foi maior nas combinações genômicas pentaploides do que nas tetraploides, e a mixoploidia foi verificada entre hexaploides. As combinações genômicas 4x e 5x são mixoploides, e a variação do número de cromossomos na raça cromossômica 5x é maior do que na 4x.pt_BR
dc.languageengpt_BR
dc.publisher-pt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.initials-pt_BR
dc.relation.ispartofPesquisa Agropecuária Brasileirapt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectPennisetum glaucumpt_BR
dc.subjectPennisetum purpureumpt_BR
dc.subjectDNA contentpt_BR
dc.subjectInterspecific hybridspt_BR
dc.subjectMixoploidypt_BR
dc.subjectPennisetum glaucumpt_BR
dc.subjectPennisetum purpureumpt_BR
dc.subjectConteúdo de DNApt_BR
dc.subjectHíbridos interespecíficospt_BR
dc.subjectMixoploidiapt_BR
dc.subject.cnpq-pt_BR
dc.titleGenomic behavior of hybrid combinations between elephant grass and pearl milletpt_BR
dc.title.alternativeComportamento genômico de combinações híbridas entre capim-elefante e milhetopt_BR
dc.typeArtigo de Periódicopt_BR
Appears in Collections:Artigos de Periódicos

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