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dc.creatorBonasora, Marisa Graciela
dc.creatorPozzobon, Marisa T.
dc.creatorHonfi, Ana Isabel
dc.creatorRua, Gabriel Hugo
dc.date.accessioned2023-01-31T17:01:06Z
dc.date.available2023-01-31T17:01:06Z
dc.date.issued2015-07-29
dc.identifier.citationBonasora, M. G., Pozzobon, M. T., Honfi, A. I., y Rua, G. H. (2015). Paspalum schesslii (Poaceae, Paspaleae), a new species from Mato Grosso (Brazil) with an unusual base chromosome number. Plant systematics and evolution. Viena, Austria : Springer; 301 (10), pp. 2325-2339.es_AR
dc.identifier.issn0378-2697
dc.identifier.otherCCPI-CNyE-A-164
dc.identifier.other9889
dc.identifier.urihttps://hdl.handle.net/20.500.12219/4469
dc.descriptionFil: Bonasora, Marisa Graciela. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Botánica Sistemática; Argentina.es_AR
dc.descriptionFil: Pozzobon, Marisa T. Empresa Brasileira de Pesquisa Agropecuaria Recursos Genéticos e Biotecnologia; Brasil.es_AR
dc.descriptionFil: Honfi, Ana Isabel. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Biología Subtropical. Programa de Estudios Florísticos y Genética Vegetal. Laboratorio de Citogenética Vegetal; Argentina.es_AR
dc.descriptionFil: Honfi, Ana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico (Nordeste). Instituto de Biología Subtropical. Programa de Estudios Florísticos y Genética Vegetal; Argentina.es_AR
dc.descriptionFil: Rua, Gabriel Hugo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Botánica Sistemática; Argentina.es_AR
dc.description.abstractPaspalum schesslii, a new species from the state of Mato Grosso in central-western Brazil, is described and illustrated. The new species is related to P. malmeanum, from central-western Brazil and eastern Bolivia, and Paspalum eucomum, from central Brazil. It comprises shorter plants with leaf blades and racemes shorter than those of the related species, and spikelets having obovate, deciduous upper florets. An unexpected chromosome number 2n=12 was found in specimens of P. schesslii; thus it differs from both P. malmeanum, which has 2n=20, and P. eucomum, for which 2n=30 and 2n=32 chromosome counts are here reported for the first time. The discovery of a new species having 2n=12, which often cohabits with diploid populations of the widespread related species, P. stellatum, is consistent with an hypothesis about the hybrid origin of the polyploid cytotypes of P. stellatum having 2n=32 and 2n=52 chromosomes. Moreover, such an hybrid origin involving parental species with different base chromosome numbers (x=6 and x=10) could also explain the occurrence of 32 chromosomes in P. eucomum, potentially documenting a speciation mechanism that is otherwise unknown in the genus.en
dc.formatapplication/pdf
dc.format.extent1.684 MB
dc.language.isoengen
dc.publisherSpringeren
dc.relationinfo:eu-repo/semantics/altIdentifier/urn/https://link.springer.com/article/10.1007/s00606-015-1231-0
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectPaspalum malmeanumen
dc.subjectPaspalum eucomumen
dc.subjectPaspalum stellatumen
dc.subjectBrazilian floraen
dc.subjectCytogeneticsen
dc.subjectGrass taxonomyen
dc.titlePaspalum schesslii (Poaceae, Paspaleae), a new species from Mato Grosso (Brazil) with an unusual base chromosome numberen
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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