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dc.contributor.author Novo, Patricia Elda
dc.contributor.author Espinoza, Francisco
dc.contributor.author Quarin, Camilo Luis
dc.date.available 2015-09-30T16:54:54Z
dc.date.issued 2014-02-11
dc.identifier.citation Novo, Patricia Elda; Espinoza, Francisco; Quarin, Camilo Luis; An apomictic tetraploid Paspalum chaseanum cytotype and its cytogenetic relationship with P. plicatulum (Poaceae) : taxonomic and genetic implications; Csiro Publishing; Australian Journal Of Botany; 61; 7; 11-2-2014; 538-543
dc.identifier.issn 0067-1924
dc.identifier.uri http://hdl.handle.net/11336/2221
dc.description.abstract Paspalum chaseanum Parodi (Poaceae) is a rare species seldom found in the vast phytogeographic Chaco region of South America. It occurs in some localities as a diploid with 20 somatic chromosomes, reproduces sexually and is selfincompatible. A tetraploid cytotype was recently collected in this geographic region. This accession was determined to reproduce of aposporous apomixis and was crossed, as pollen donor, onto a sexual autotetraploid plant of P. plicatulum Michx. The meiotic chromosome pairing behaviour of both parents and their hybrids was primarily as bivalents and quadrivalents, indicating that tetraploid P. chaseanum is likely to have an autoploid origin, and that both species share basically the same genome. Although some controversies exist regarding the subgeneric taxonomic classification of P. chaseanum, these results support its inclusion in the informal Plicatula group of Paspalum. The P. plicatulum P. chaseanum hybrids segregated for apomixis. The amount of seed set in some hybrids (up to 17%) and the presence of sexual as well as facultative apomictic individuals in the progeny suggest that gene transfer through hybridisation is a feasible tool in genetic-improvement programs concerning these forage grass species.
dc.format application/pdf
dc.language.iso eng
dc.publisher Csiro Publishing
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject INTERSPECIFIC HYBRIDS
dc.subject APOMIXIS
dc.subject PLANT BREEDING
dc.subject.classification Otras Ciencias Agrícolas
dc.subject.classification Otras Ciencias Agrícolas
dc.subject.classification CIENCIAS AGRÍCOLAS
dc.title An apomictic tetraploid Paspalum chaseanum cytotype and its cytogenetic relationship with P. plicatulum (Poaceae) : taxonomic and genetic implications
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-03-30 10:35:44.97925-03
dc.journal.volume 61
dc.journal.number 7
dc.journal.pagination 538-543
dc.journal.pais Australia
dc.journal.ciudad Collingwood
dc.description.fil Fil: Novo, Patricia Elda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina;
dc.description.fil Fil: Espinoza, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;
dc.description.fil Fil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina;
dc.journal.title Australian Journal Of Botany
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.publish.csiro.au/?paper=BT13194
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/BT13194


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)