Chromossome numbers and meiotic behavior of some Paspalum accessions.

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dc.contributorELENIZA DE VICTOR ADAMOWSKI, Universidade Paranaense; MARIA SUELY PAGLIARINI, Universidade Estadual de Maringá; ANDRÉA BEATRIZ MENDES BONATO, Universidade Estadual de Maringá; LUIZ ALBERTO ROCHA BATISTA, CPPSE; JOSE FRANCISCO MONTENEGRO VALLS, Cenargen.
dc.creatorADAMOWSKI, E. de V.
dc.creatorPAGLIARINI, M. S.
dc.creatorBONATO, A. B. M.
dc.creatorBATISTA, L. A. R.
dc.creatorVALLS, J. F. M.
dc.date2023-03-10T14:50:20Z
dc.date2023-03-10T14:50:20Z
dc.date2006-01-23
dc.date2005
dc.date.accessioned2026-07-07T05:31:18Z
dc.descriptionChromosome number and meiotic behavior were evaluated in 36 Brazilian accessions of the grass Paspalum (which had never previously been analyzed) to determinate which accessions might be useful in interspecific hybridizations. The analysis showed that one accession of Paspalum coryphaeum was diploid (2n = 2x = 20) and one accession of Paspalum conspersum hexaploid (2n = 6x = 60), the remaining 34 accessions being tetraploid (2n = 4x = 40). The pairing configuration was typical for the ploidy level i.e. in the diploid, chromosomes paired as 10 bivalents, in tetraploids as bi-, tri- and quadrivalents, and in hexaploid as 30 bivalents. A low frequency of meiotic abnormalities (less than 10%) was observed in the diploid, hexaploid and some tetraploid accessions, although the majority of tetraploid accessions showed a high frequency of meiotic irregularities. The use of accessions with a low frequency of meiotic abnormalities in breeding programs is discussed.
dc.identifierGenetic and Molecular Biology, v. 28, n. 4, p. 773-780, dec. 2005.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/41288
dc.identifierhttps://doi.org/10.1590/S1415-47572005000500020
dc.identifier.urihttp://hdl.handle.net/123456789/493671
dc.languageeng
dc.rightsopenAccess
dc.subjectChromosome numbers
dc.subjectMeiotic behavior
dc.subjectPaspalum
dc.subjectForage grasses
dc.titleChromossome numbers and meiotic behavior of some Paspalum accessions.
dc.typeArtigo de periódico

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