Natural hybrids in Senecio (Asteraceae): new records from Argentina
- Autores
- Lopez, Mariana Gabriela; Wulff, Arturo Federico; Xifreda, C. C.
- Año de publicación
- 2008
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Hybridisation is very common within Senecio. It is considered a fundamental mechanism of speciation and also a major feature causing systematic complexity. Morphological features are the preliminary characteristics used to identify hybrids; however this approach is usually not sufficient when this is the case chromosome studies represent a valuable tool for reinforcing the observations. Two natural homoploid interspecific hybrids are reported here: Senecio 6 lulioi M. G. Lo´pez et Xifreda (S. brasiliensis (Spreng.) Less. 6S. grisebachii Baker) and Senecio 6piepaloensis M. G. Lo´pez et Xifreda (S. ragonesei Cabrera6 S. sectilis Griseb.). Classic cytogenetic analysis and pollen stainability were performed to evaluate hybrid origins and to designate the putative parents. S. 6lulioi presented a low frequency of quadrivalents and heteromorphic bivalents, both strong evidences of hybridisation between closely related species. S.6 piepaloensis exhibited a high frequency of meiotic irregularities, and reduced pollen stainability, certain characteristics of hybrids. This analysis is discussed in relation to the role of hybridisation in the evolution of the genus, and its systematic significance.
Fil: Lopez, Mariana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina
Fil: Wulff, Arturo Federico. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Xifreda, C. C.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Etnobotánica y Botánica Aplicada; Argentina - Materia
-
Senecio
cytogenetics
hybrids
meitoic irregularities - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/244618
Ver los metadatos del registro completo
id |
CONICETDig_20b41aa37f6a32c41774f811bba652d4 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/244618 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Natural hybrids in Senecio (Asteraceae): new records from ArgentinaLopez, Mariana GabrielaWulff, Arturo FedericoXifreda, C. C.Seneciocytogeneticshybridsmeitoic irregularitieshttps://purl.org/becyt/ford/2.9https://purl.org/becyt/ford/2Hybridisation is very common within Senecio. It is considered a fundamental mechanism of speciation and also a major feature causing systematic complexity. Morphological features are the preliminary characteristics used to identify hybrids; however this approach is usually not sufficient when this is the case chromosome studies represent a valuable tool for reinforcing the observations. Two natural homoploid interspecific hybrids are reported here: Senecio 6 lulioi M. G. Lo´pez et Xifreda (S. brasiliensis (Spreng.) Less. 6S. grisebachii Baker) and Senecio 6piepaloensis M. G. Lo´pez et Xifreda (S. ragonesei Cabrera6 S. sectilis Griseb.). Classic cytogenetic analysis and pollen stainability were performed to evaluate hybrid origins and to designate the putative parents. S. 6lulioi presented a low frequency of quadrivalents and heteromorphic bivalents, both strong evidences of hybridisation between closely related species. S.6 piepaloensis exhibited a high frequency of meiotic irregularities, and reduced pollen stainability, certain characteristics of hybrids. This analysis is discussed in relation to the role of hybridisation in the evolution of the genus, and its systematic significance.Fil: Lopez, Mariana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; ArgentinaFil: Wulff, Arturo Federico. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Xifreda, C. C.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Etnobotánica y Botánica Aplicada; ArgentinaTaylor & Francis Ltd2008-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/244618Lopez, Mariana Gabriela; Wulff, Arturo Federico; Xifreda, C. C.; Natural hybrids in Senecio (Asteraceae): new records from Argentina; Taylor & Francis Ltd; Plant Biosystems; 142; 1; 3-2008; 186-1911126-3504CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/11263500701873075info:eu-repo/semantics/altIdentifier/doi/10.1080/11263500701873075info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:57:40Zoai:ri.conicet.gov.ar:11336/244618instacron: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:34982025-09-29 09:57:41.066CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Natural hybrids in Senecio (Asteraceae): new records from Argentina |
title |
Natural hybrids in Senecio (Asteraceae): new records from Argentina |
spellingShingle |
Natural hybrids in Senecio (Asteraceae): new records from Argentina Lopez, Mariana Gabriela Senecio cytogenetics hybrids meitoic irregularities |
title_short |
Natural hybrids in Senecio (Asteraceae): new records from Argentina |
title_full |
Natural hybrids in Senecio (Asteraceae): new records from Argentina |
title_fullStr |
Natural hybrids in Senecio (Asteraceae): new records from Argentina |
title_full_unstemmed |
Natural hybrids in Senecio (Asteraceae): new records from Argentina |
title_sort |
Natural hybrids in Senecio (Asteraceae): new records from Argentina |
dc.creator.none.fl_str_mv |
Lopez, Mariana Gabriela Wulff, Arturo Federico Xifreda, C. C. |
author |
Lopez, Mariana Gabriela |
author_facet |
Lopez, Mariana Gabriela Wulff, Arturo Federico Xifreda, C. C. |
author_role |
author |
author2 |
Wulff, Arturo Federico Xifreda, C. C. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Senecio cytogenetics hybrids meitoic irregularities |
topic |
Senecio cytogenetics hybrids meitoic irregularities |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.9 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
Hybridisation is very common within Senecio. It is considered a fundamental mechanism of speciation and also a major feature causing systematic complexity. Morphological features are the preliminary characteristics used to identify hybrids; however this approach is usually not sufficient when this is the case chromosome studies represent a valuable tool for reinforcing the observations. Two natural homoploid interspecific hybrids are reported here: Senecio 6 lulioi M. G. Lo´pez et Xifreda (S. brasiliensis (Spreng.) Less. 6S. grisebachii Baker) and Senecio 6piepaloensis M. G. Lo´pez et Xifreda (S. ragonesei Cabrera6 S. sectilis Griseb.). Classic cytogenetic analysis and pollen stainability were performed to evaluate hybrid origins and to designate the putative parents. S. 6lulioi presented a low frequency of quadrivalents and heteromorphic bivalents, both strong evidences of hybridisation between closely related species. S.6 piepaloensis exhibited a high frequency of meiotic irregularities, and reduced pollen stainability, certain characteristics of hybrids. This analysis is discussed in relation to the role of hybridisation in the evolution of the genus, and its systematic significance. Fil: Lopez, Mariana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina Fil: Wulff, Arturo Federico. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Citogenética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Xifreda, C. C.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Etnobotánica y Botánica Aplicada; Argentina |
description |
Hybridisation is very common within Senecio. It is considered a fundamental mechanism of speciation and also a major feature causing systematic complexity. Morphological features are the preliminary characteristics used to identify hybrids; however this approach is usually not sufficient when this is the case chromosome studies represent a valuable tool for reinforcing the observations. Two natural homoploid interspecific hybrids are reported here: Senecio 6 lulioi M. G. Lo´pez et Xifreda (S. brasiliensis (Spreng.) Less. 6S. grisebachii Baker) and Senecio 6piepaloensis M. G. Lo´pez et Xifreda (S. ragonesei Cabrera6 S. sectilis Griseb.). Classic cytogenetic analysis and pollen stainability were performed to evaluate hybrid origins and to designate the putative parents. S. 6lulioi presented a low frequency of quadrivalents and heteromorphic bivalents, both strong evidences of hybridisation between closely related species. S.6 piepaloensis exhibited a high frequency of meiotic irregularities, and reduced pollen stainability, certain characteristics of hybrids. This analysis is discussed in relation to the role of hybridisation in the evolution of the genus, and its systematic significance. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-03 |
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/11336/244618 Lopez, Mariana Gabriela; Wulff, Arturo Federico; Xifreda, C. C.; Natural hybrids in Senecio (Asteraceae): new records from Argentina; Taylor & Francis Ltd; Plant Biosystems; 142; 1; 3-2008; 186-191 1126-3504 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/244618 |
identifier_str_mv |
Lopez, Mariana Gabriela; Wulff, Arturo Federico; Xifreda, C. C.; Natural hybrids in Senecio (Asteraceae): new records from Argentina; Taylor & Francis Ltd; Plant Biosystems; 142; 1; 3-2008; 186-191 1126-3504 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/11263500701873075 info:eu-repo/semantics/altIdentifier/doi/10.1080/11263500701873075 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Taylor & Francis Ltd |
publisher.none.fl_str_mv |
Taylor & 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_ |
1844613724011233280 |
score |
13.070432 |