Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)

Autores
Via Do Pico, Gisela Mariel; Dematteis, Massimiliano
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Via Do Pico, Gisela Mariel. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Via Do Pico, Gisela Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
Fil: Dematteis, Massimiliano. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Dematteis, Massimiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
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.
Fuente
Webbia, 2017, vol. 72, no. 1, p.139-147.
Materia
Bivalents
Meiotic abnormalities
Pollen viability
Univalents
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
Institución
Universidad Nacional del Nordeste
OAI Identificador
oai:repositorio.unne.edu.ar:123456789/28209
Acceder
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oai_identifier_str oai:repositorio.unne.edu.ar:123456789/28209
network_acronym_str RIUNNE
repository_id_str 4871
network_name_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
spelling Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)Via Do Pico, Gisela MarielDematteis, MassimilianoBivalentsMeiotic abnormalitiesPollen viabilityUnivalentsFil: Via Do Pico, Gisela Mariel. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Via Do Pico, Gisela Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.Fil: Dematteis, Massimiliano. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.Fil: Dematteis, Massimiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.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.Taylor and Francis Ltd2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfVia Do Pico, Gisela Mariel y Dematteis, Massimiliano, 2017. Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae:asteraceae). Webbia. London: Taylor and Francis Ltd., vol. 72, no. 1, p.139-147. ISSN 2169-4060.0083-7792http://repositorio.unne.edu.ar/handle/123456789/28209Webbia, 2017, vol. 72, no. 1, p.139-147.reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)instname:Universidad Nacional del Nordesteenghttps://www.tandfonline.com/doi/full/10.1080/00837792.2016.1260881info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/Atribución-NoComercial-SinDerivadas 2.5 Argentina2025-10-23T11:18:44Zoai:repositorio.unne.edu.ar:123456789/28209instacron:UNNEInstitucionalhttp://repositorio.unne.edu.ar/Universidad públicaNo correspondehttp://repositorio.unne.edu.ar/oaiososa@bib.unne.edu.ar;sergio.alegria@unne.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:48712025-10-23 11:18:44.542Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordestefalse
dc.title.none.fl_str_mv Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
title Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
spellingShingle Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
Via Do Pico, Gisela Mariel
Bivalents
Meiotic abnormalities
Pollen viability
Univalents
title_short Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
title_full Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
title_fullStr Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
title_full_unstemmed Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
title_sort Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae: asteraceae)
dc.creator.none.fl_str_mv Via Do Pico, Gisela Mariel
Dematteis, Massimiliano
author Via Do Pico, Gisela Mariel
author_facet Via Do Pico, Gisela Mariel
Dematteis, Massimiliano
author_role author
author2 Dematteis, Massimiliano
author2_role author
dc.subject.none.fl_str_mv Bivalents
Meiotic abnormalities
Pollen viability
Univalents
topic Bivalents
Meiotic abnormalities
Pollen viability
Univalents
dc.description.none.fl_txt_mv Fil: Via Do Pico, Gisela Mariel. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Via Do Pico, Gisela Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
Fil: Dematteis, Massimiliano. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
Fil: Dematteis, Massimiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
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.
description Fil: Via Do Pico, Gisela Mariel. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina.
publishDate 2017
dc.date.none.fl_str_mv 2017-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Via Do Pico, Gisela Mariel y Dematteis, Massimiliano, 2017. Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae:asteraceae). Webbia. London: Taylor and Francis Ltd., vol. 72, no. 1, p.139-147. ISSN 2169-4060.
0083-7792
http://repositorio.unne.edu.ar/handle/123456789/28209
identifier_str_mv Via Do Pico, Gisela Mariel y Dematteis, Massimiliano, 2017. Meiotic behaviour and B chromosomes in Argentine populations of chrysolaena verbascifolia (vernonieae:asteraceae). Webbia. London: Taylor and Francis Ltd., vol. 72, no. 1, p.139-147. ISSN 2169-4060.
0083-7792
url http://repositorio.unne.edu.ar/handle/123456789/28209
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.tandfonline.com/doi/full/10.1080/00837792.2016.1260881
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Atribución-NoComercial-SinDerivadas 2.5 Argentina
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor and Francis Ltd
publisher.none.fl_str_mv Taylor and Francis Ltd
dc.source.none.fl_str_mv Webbia, 2017, vol. 72, no. 1, p.139-147.
reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname:Universidad Nacional del Nordeste
reponame_str Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
collection Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
instname_str Universidad Nacional del Nordeste
repository.name.fl_str_mv Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordeste
repository.mail.fl_str_mv ososa@bib.unne.edu.ar;sergio.alegria@unne.edu.ar
_version_ 1846787791856336896
score 12.982451

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