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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
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Plant Breeding
dc.subject.classification
Otras Ciencias Agrícolas
dc.subject.classification
Otras Ciencias Agrícolas
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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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