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Karyotype analysis in Brachiaria (Poaceae) species

dc.contributor.authorBernini, C.
dc.contributor.authorMarin-Morales, M. A.
dc.contributor.institutionUniversidade Estadual de Londrina (UEL)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:20Z
dc.date.available2014-05-20T15:21:20Z
dc.date.issued2001-01-01
dc.description.abstractThis is the first karyotype characterization of Brachiaria species. Twelve accessions belonging to five species were analysed. The basic chromosome number was x = 9 and 7, the same reported for the tribe Paniceae. Variations in the chromosome number were observed in B. decumbens (2n = 18; 36) and B. humidicola (20 = 36; 42; 54). Chromosome numbers of 20 = 18 in B. ruziziensis and 20 = 36 in B. brizantha and B. jubata were recorded. Inter- and intraspecific karyotype differentiation of the accessions analysed was facilitated by variations in karyotypic symmetry. The karyotypes were generally considered symmetrical, with a tendency to asymmetry in the direction of the polyploids. It is suggested that addition, deletions and mainly polyploidy have been the most direct causes involved in the chromosome evolution of this genus.en
dc.description.affiliationUniv Estadual Londrina, Inst Biol Geral, BR-86051970 Londrina, PR, Brazil
dc.description.affiliationUNESP, Fac Ciências & Letras, Dept Ciências Biol, BR-19800000 Assis, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Ciências & Letras, Dept Ciências Biol, BR-19800000 Assis, SP, Brazil
dc.format.extent157-171
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/11318511
dc.identifier.citationCytobios. Cambridge: Faculty Press, v. 104, n. 407, p. 157-171, 2001.
dc.identifier.issn0011-4529
dc.identifier.urihttp://hdl.handle.net/11449/32492
dc.identifier.wosWOS:000168085600003
dc.language.isoeng
dc.publisherFaculty Press
dc.relation.ispartofCytobios
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectchromosomept
dc.subjectkaryotypept
dc.subjectBrachiariapt
dc.subjectcytogeneticspt
dc.titleKaryotype analysis in Brachiaria (Poaceae) speciesen
dc.typeArtigo
dcterms.rightsHolderFaculty Press
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Letras, Assispt
unesp.departmentCiências Biológicas - FCLASpt

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