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dc.contributor.authorMaximiano da Silva, Carlos Roberto [UNESP]
dc.contributor.authorTrevisan, Rafael
dc.contributor.authorSocorro Gonzalez-Elizondo, Maria
dc.contributor.authorFerreira, Josue Maldonado
dc.contributor.authorLaforga Vanzela, Andre Luis
dc.identifier.citationAustralian Journal of Botany. Collingwood: Csiro Publishing, v. 58, n. 1, p. 49-60, 2010.
dc.description.abstractA karyotype analysis of 147 populations of 25 Brazilian species of Eleocharis (Cyperaceae) was carried out, including representatives of the three subgenera that occur in the country: Limnochloa, Scirpidium and Eleocharis. The analyses showed chromosomes without centromeres, but with terminal nucleolar constrictions (satellites) in some chromosomes. The chromosome numbers varied from 2n = 6 in E. subarticulata and E. maculosa to 2n = 60 in E. laeviglumis, but the chromosome basic number x = 5 was confirmed. Species of the subgenera Eleocharis and Scirpidium possess fewer and larger chromosomes, while those in the subgenus Limnochloa have small and more numerous chromosomes. These features indicate that the karyotypes of the subgenera Eleocharis and Scirpidium are more closely related, in agreement with morphological and phylogenetical data. The representatives of the section Eleocharis exhibited the largest differences in chromosome number and size, probably due to chromosome fission and fusion. Polyploidy was the most common event in this group. Nevertheless, most of the studied species exhibited regular meiosis with only bivalent formation, even the polyploids, such as in E. geniculata and E. sellowiana. The cytogenetic information obtained showed quite variable karyotypes with chromosomes gradually decreasing in size, and predominance of polyploidy. These results are useful in the differentiation of the subgenera.en
dc.description.sponsorshipFundação Araucária de Apoio ao Desenvolvimento Científico e Tecnológico do Paraná (FAADCT/PR)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.publisherCSIRO Publishing
dc.relation.ispartofAustralian Journal of Botany
dc.sourceWeb of Science
dc.titleKaryotypic diversification and its contribution to the taxonomy of Eleocharis (Cyperaceae) from Brazilen
dcterms.rightsHolderCsiro Publishing
dc.contributor.institutionUniversidade Estadual de Londrina (UEL)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Rio Grande do Sul (UFRGS)
dc.description.affiliationUniversidade Estadual de Londrina (UEL), Dept Biol Geral, Ctr Ciencias Biol, BR-86051970 Londrina, PR, Brazil
dc.description.affiliationUniversidade Estadual de Londrina (UEL), Lab Biodiversidade & Restauracao Ecossistemas, Dept Biol Geral, Ctr Ciencias Biol, BR-86051990 Londrina, Parana, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Biol, Inst Biociencias Letras & Ciencias Exatas, UNESP IBILCE, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUniversidade Federal do Rio Grande do Sul (UFRGS), Inst Biociencias, BR-91501970 Porto Alegre, RS, Brazil
dc.description.affiliationIPN, Ctr Interdisciplinario Invest Desarrollo Integral, Durango 34220, Dgo, Mexico
dc.description.affiliationUnespUniv Estadual Paulista, Dept Biol, Inst Biociencias Letras & Ciencias Exatas, UNESP IBILCE, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
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unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt[5][3]
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