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
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.
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
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
Materia
Bivalents
Meiotic Abnormalities
Pollen Viability
Univalents
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/54514
Acceder
id CONICETDig_1a62818b2ec0c3092556a9a44f2f2472
oai_identifier_str oai:ri.conicet.gov.ar:11336/54514
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Meiotic behaviour and B chromosomes in Argentine populations of Chrysolaena verbascifolia (Vernonieae: Asteraceae)Via Do Pico, Gisela MarielDematteis, MassimilianoBivalentsMeiotic AbnormalitiesPollen ViabilityUnivalentshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Four 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.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; ArgentinaFil: 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; ArgentinaTaylor and Francis Ltd.2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54514Via 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; 139-1470083-77922169-4060CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/00837792.2016.1260881info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00837792.2016.1260881info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:21:17Zoai:ri.conicet.gov.ar:11336/54514instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:21:17.501CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
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
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
description 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.
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 http://hdl.handle.net/11336/54514
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
0083-7792
2169-4060
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54514
identifier_str_mv 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
0083-7792
2169-4060
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/00837792.2016.1260881
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00837792.2016.1260881
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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 reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083361350615040
score 13.22299

Publicaciones similares