Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/873028
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dc.contributor.authorPESSIM, C.pt_BR
dc.contributor.authorPAGLIARINI, M. S.pt_BR
dc.contributor.authorJANK, L.pt_BR
dc.contributor.authorKANESHIMA, A. M. de S.pt_BR
dc.contributor.authorBONATO, A. B. M.pt_BR
dc.date.accessioned2011-04-09T16:07:42Z-
dc.date.available2011-04-09T16:07:42Z-
dc.date.created2011-01-13pt_BR
dc.date.issued2010pt_BR
dc.identifier.citationActa Scientiarum. Agronomy, v. 32, n. 3, p. 417-422, 2010.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/873028pt_BR
dc.descriptionPanicum maximum Jacq. is one of the most cultivated grasses in the world. The intraspecific hybridization breeding program underway at Embrapa Beef Cattle aims at combining several agronomic characteristics in a single plant with high seed production. Four intraspecific hybrids originated from the cross between sexual tetraploid female plants with apomictic tetraploid male plants, including the genitors, were cytologically evaluated in the meiotic process throughout conventional methodology. Hybrids and genitors showed high meiotic stability. The percentage of abnormal cells among them ranged from 6.7 to 14.2%. Abnormalities recorded were irregular chromosome segregation, chromosome stickiness, and absence of the first cytokinesis, but the latter did not compromise pollen viability. Multivalent chromosome configurations at diakinesis, ranging from one to three quadrivalents, suggest that genetic recombination and introgression of some genes can be expected in the hybrids. Based on meiotic stability, the hybrids should be selected for high seed production, and the genitors could remain in the program participating in other intraspecific crosses.pt_BR
dc.language.isoporpt_BR
dc.rightsopenAccesspt_BR
dc.subjectPrograma de melhoramentopt_BR
dc.subjectHíbridos interespecíficospt_BR
dc.titleMeiotic behavior in Panicum maximum Jacq. (Poaceae: Panicoideae: Paniceae): hybrids and their genitors.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2011-04-10T11:11:11Zpt_BR
dc.subject.thesagroCaracterísticas Agronômicaspt_BR
dc.subject.thesagroMeiosept_BR
dc.subject.thesagroGramínea Forrageirapt_BR
dc.subject.thesagroPanicum Maximumpt_BR
dc.subject.thesagroMelhoramento Genético Vegetalpt_BR
dc.subject.thesagroPastagempt_BR
dc.subject.thesagroProdução de Sementespt_BR
dc.subject.nalthesaurusPanicumpt_BR
dc.subject.nalthesaurusMeiosispt_BR
riaa.ainfo.id873028pt_BR
riaa.ainfo.lastupdate2011-01-14pt_BR
dc.identifier.doihttps://doi.org/10.4025/actasciagron.v32i3.6461pt_BR
dc.contributor.institutionCLEIDE PESSIM, UNIVERSIDADE ESTADUAL DE MARINGÁpt_BR
dc.contributor.institutionMARIA SUELY PAGLIARINI, UNIVERSIDADE ESTADUAL DE MARINGÁpt_BR
dc.contributor.institutionLIANA JANK, CNPGCpt_BR
dc.contributor.institutionALICE MARIA DE SOUZA KANESHIMA, UNIVERSIDADE ESTADUAL DE MARINGÁpt_BR
dc.contributor.institutionANDRÉA BEATRIZ MENDES BONATO, UNIVERSIDADE ESTADUAL DE MARINGÁ.pt_BR
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