Karyotype analysis in Brachiaria (Poaceae) species

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBernini, C.
dc.creatorMarin-Morales, M. A.
dc.date2014-05-20T15:21:20Z
dc.date2016-10-25T17:54:44Z
dc.date2014-05-20T15:21:20Z
dc.date2016-10-25T17:54:44Z
dc.date2001-01-01
dc.date.accessioned2017-04-05T23:30:50Z
dc.date.available2017-04-05T23:30:50Z
dc.identifierCytobios. Cambridge: Faculty Press, v. 104, n. 407, p. 157-171, 2001.
dc.identifier0011-4529
dc.identifierhttp://hdl.handle.net/11449/32492
dc.identifierhttp://acervodigital.unesp.br/handle/11449/32492
dc.identifierWOS:000168085600003
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/11318511
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/876824
dc.descriptionThis 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.
dc.languageeng
dc.publisherFaculty Press
dc.relationCytobios
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectchromosome
dc.subjectkaryotype
dc.subjectBrachiaria
dc.subjectcytogenetics
dc.titleKaryotype analysis in Brachiaria (Poaceae) species
dc.typeOtro


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