Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/39007
Título: Genomic behavior of hybrid combinations between elephant grass and pearl millet
Título(s) alternativo(s): Comportamento genômico de combinações híbridas entre capim-elefante e milheto
Palavras-chave: Pennisetum glaucum
Pennisetum purpureum
DNA content
Interspecific hybrids
Mixoploidy
Conteúdo de DNA
Híbridos interespecíficos
Mixoploidia
Data do documento: Jul-2011
Editor: Embrapa Secretaria de Pesquisa e Desenvolvimento Pesquisa Agropecuária Brasileira
Citação: LEÃO, F. F.; DAVIDE, L. C.; CAMPOS, J. M. S. de; PEREIRA, A. V.; BUSTAMANTE, F. de O. Genomic behavior of hybrid combinations between elephant grass and pearl millet. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 46, n. 7, p. 712-719, jul. 2011.
Resumo: The 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.
URI: http://repositorio.ufla.br/jspui/handle/1/39007
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