Mostrar el registro sencillo del ítem

dc.contributor.author
Via Do Pico, Gisela Mariel  
dc.contributor.author
Dematteis, Massimiliano  
dc.date.available
2018-08-07T20:32:47Z  
dc.date.issued
2017-01  
dc.identifier.citation
Via Do Pico, Gisela Mariel; Dematteis, Massimiliano; Meiotic behaviour and B chromosomes in Argentine populations of Chrysolaena verbascifolia (Vernonieae: Asteraceae); Taylor and Francis Ltd.; Webbia; 72; 1; 1-2017; 139-147  
dc.identifier.issn
0083-7792  
dc.identifier.uri
http://hdl.handle.net/11336/54514  
dc.description.abstract
Four populations of Chrysolaena verbascifolia (Vernonieae: Asteraceae) from localities in Argentina were cytologically analysed for meiotic behaviour and pollen viability. This is the first meiotic analysis in the species. All were diploids with 2n = 2x = 20 and all showed quite regular meiotic behaviour. We also report the occurrence of accessory chromosomes in all the populations of the species. The majority of the populations displayed regular bivalent formation during late prophase stages and metaphase I, and chromosome segregation at anaphase. However, some chromosomal irregularities were recorded, mainly during meiosis I, including univalents, out-of-plate chromosomes and precocious segregation in metaphase, and laggards and chromatin bridges in anaphase. The B chromosomes and abnormal behaviours of the chromosomes during meiosis observed did not affect pollen development in these taxa, as viability was always high.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Taylor and Francis Ltd.  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Bivalents  
dc.subject
Meiotic Abnormalities  
dc.subject
Pollen Viability  
dc.subject
Univalents  
dc.subject.classification
Ciencias de las Plantas, Botánica  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Meiotic behaviour and B chromosomes in Argentine populations of Chrysolaena verbascifolia (Vernonieae: Asteraceae)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-07-11T14:18:22Z  
dc.identifier.eissn
2169-4060  
dc.journal.volume
72  
dc.journal.number
1  
dc.journal.pagination
139-147  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
London  
dc.description.fil
Fil: Via Do Pico, Gisela Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina  
dc.description.fil
Fil: Dematteis, Massimiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina  
dc.journal.title
Webbia  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/00837792.2016.1260881  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00837792.2016.1260881