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dc.contributor.authorBERNARDO FILHO, R. A.pt_BR
dc.contributor.authorSANTOS, A. C. C.pt_BR
dc.contributor.authorSOUZA, F. H. D. dept_BR
dc.contributor.authorVALLS, J. F. M.pt_BR
dc.contributor.authorPAGLIARINI, M. S.pt_BR
dc.date.accessioned2014-04-02T11:11:11Zpt_BR
dc.date.available2014-04-02T11:11:11Zpt_BR
dc.date.created2014-04-02pt_BR
dc.date.issued2014pt_BR
dc.identifier.citationGenetics and Molecular Research, v. 13, n. 1, p. 255-261, jan. 2014.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/983777pt_BR
dc.descriptionCytological investigation revealed complete asynapsis during microsporogenesis in 2 wild accessions of Paspalum jesuiticum collected in distinct Brazilian regions. Both accessions were hexaploid (2n = 6x = 60) and 60 univalents could be counted at diakinesis. In this phase, the majority of meiocytes exhibited univalents with both chromatids. After alignment at the metaphase plate, the chromatids segregated to the poles. Only 1 meiotic division (equational) occurred, and after cytokinesis, a dyad with 2n microspores was formed. The genetic constitution of the 2n gametes was equivalent to that of first division restitution (FDR). Since recombination did not occur, 100% transmission of parental heterozygosity could be expected from the FDR 2n gametes. The meiotic behavior of both accessions suggested that they resulted from a recent natural hybridization event. The potential use of the 2n gametes in Paspalum breeding programs has been discussed.eng
dc.language.isoengpt_BR
dc.rightsopenAccesspt_BR
dc.titleComplete asynapsis resulting in 2n pollen formation in Paspalum jesuiticum Parodi (Poaceae).pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-02-29T11:11:11Zpt_BR
dc.subject.nalthesaurusPoaceaept_BR
dc.subject.nalthesaurushexaploidypt_BR
dc.subject.nalthesaurusinterspecific hybridizationpt_BR
dc.subject.nalthesaurusmeiosispt_BR
dc.subject.nalthesauruspolyploidypt_BR
riaa.ainfo.id983777pt_BR
riaa.ainfo.lastupdate2016-02-29pt_BR
dc.identifier.doi10.4238/2014.January.17.9eng
dc.contributor.institutionR. A. BERNARDO FILHO, Universidade Estadual de Maringápt_BR
dc.contributor.institutionA. C. C. SANTOS, Universidade Estadual de Maringáeng
dc.contributor.institutionFRANCISCO HUMBERTO DUBBERN DE SOUZA, CPPSEeng
dc.contributor.institutionJOSE FRANCISCO MONTENEGRO VALLS, CENARGENeng
dc.contributor.institutionM. S. PAGLIARINI, Universidade Estadual de Maringá.eng
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