Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)

Autores
Sosa, María de las Mercedes; Seijo, José Guillermo
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Chromosome studies were carried out on 5 Argentinian species of Stemodia. First chromosome counts are presented for S. ericifolia (2n=22), S. lanceolata (2n=22), S. stricta (2n=44) and S. hyptoides (2n=66), while the number 2n=22 of S. verticillata is confirmed. These numbers constitute the first reports for South American species of Stemodia. In addition, the karyograms of S. lanceolata and S. verticillata are the first descriptions for the genus. Diploid species showed regular meiotic behaviour and pollen viability was high in all the accessions analysed. These results suggest that 2 different mechanisms would be implicated in chromosome diversification of Stemodia. The first one implicates variation in genome size with karyotype formulae conservation and the second, polyploidy. Chromosome data provided here are discussed in relation to growth habit, morphological characters and taxonomic position of the species.
Fil: Sosa, María de las Mercedes. 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: Seijo, José Guillermo. 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
CHROMOSOME NUMBERS
KARYOTYPES
POLYPLOIDY
STEMODIA
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:11336/39332
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)Sosa, María de las MercedesSeijo, José GuillermoCHROMOSOME NUMBERSKARYOTYPESPOLYPLOIDYSTEMODIAhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Chromosome studies were carried out on 5 Argentinian species of Stemodia. First chromosome counts are presented for S. ericifolia (2n=22), S. lanceolata (2n=22), S. stricta (2n=44) and S. hyptoides (2n=66), while the number 2n=22 of S. verticillata is confirmed. These numbers constitute the first reports for South American species of Stemodia. In addition, the karyograms of S. lanceolata and S. verticillata are the first descriptions for the genus. Diploid species showed regular meiotic behaviour and pollen viability was high in all the accessions analysed. These results suggest that 2 different mechanisms would be implicated in chromosome diversification of Stemodia. The first one implicates variation in genome size with karyotype formulae conservation and the second, polyploidy. Chromosome data provided here are discussed in relation to growth habit, morphological characters and taxonomic position of the species.Fil: Sosa, María de las Mercedes. 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: Seijo, José Guillermo. 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; ArgentinaUniv Tokyo Cytologia2002-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/39332Sosa, María de las Mercedes; Seijo, José Guillermo; Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae); Univ Tokyo Cytologia; Cytologia; 67; 3; 9-2002; 261-2660011-45451348-7019CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.jstage.jst.go.jp/article/cytologia/67/3/67_3_261/_articleinfo:eu-repo/semantics/altIdentifier/doi/10.1508/cytologia.67.261info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:05:11Zoai:ri.conicet.gov.ar:11336/39332instacron: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 10:05:12.003CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
title Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
spellingShingle Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
Sosa, María de las Mercedes
CHROMOSOME NUMBERS
KARYOTYPES
POLYPLOIDY
STEMODIA
title_short Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
title_full Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
title_fullStr Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
title_full_unstemmed Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
title_sort Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae)
dc.creator.none.fl_str_mv Sosa, María de las Mercedes
Seijo, José Guillermo
author Sosa, María de las Mercedes
author_facet Sosa, María de las Mercedes
Seijo, José Guillermo
author_role author
author2 Seijo, José Guillermo
author2_role author
dc.subject.none.fl_str_mv CHROMOSOME NUMBERS
KARYOTYPES
POLYPLOIDY
STEMODIA
topic CHROMOSOME NUMBERS
KARYOTYPES
POLYPLOIDY
STEMODIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Chromosome studies were carried out on 5 Argentinian species of Stemodia. First chromosome counts are presented for S. ericifolia (2n=22), S. lanceolata (2n=22), S. stricta (2n=44) and S. hyptoides (2n=66), while the number 2n=22 of S. verticillata is confirmed. These numbers constitute the first reports for South American species of Stemodia. In addition, the karyograms of S. lanceolata and S. verticillata are the first descriptions for the genus. Diploid species showed regular meiotic behaviour and pollen viability was high in all the accessions analysed. These results suggest that 2 different mechanisms would be implicated in chromosome diversification of Stemodia. The first one implicates variation in genome size with karyotype formulae conservation and the second, polyploidy. Chromosome data provided here are discussed in relation to growth habit, morphological characters and taxonomic position of the species.
Fil: Sosa, María de las Mercedes. 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: Seijo, José Guillermo. 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 Chromosome studies were carried out on 5 Argentinian species of Stemodia. First chromosome counts are presented for S. ericifolia (2n=22), S. lanceolata (2n=22), S. stricta (2n=44) and S. hyptoides (2n=66), while the number 2n=22 of S. verticillata is confirmed. These numbers constitute the first reports for South American species of Stemodia. In addition, the karyograms of S. lanceolata and S. verticillata are the first descriptions for the genus. Diploid species showed regular meiotic behaviour and pollen viability was high in all the accessions analysed. These results suggest that 2 different mechanisms would be implicated in chromosome diversification of Stemodia. The first one implicates variation in genome size with karyotype formulae conservation and the second, polyploidy. Chromosome data provided here are discussed in relation to growth habit, morphological characters and taxonomic position of the species.
publishDate 2002
dc.date.none.fl_str_mv 2002-09
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/11336/39332
Sosa, María de las Mercedes; Seijo, José Guillermo; Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae); Univ Tokyo Cytologia; Cytologia; 67; 3; 9-2002; 261-266
0011-4545
1348-7019
CONICET Digital
CONICET
url http://hdl.handle.net/11336/39332
identifier_str_mv Sosa, María de las Mercedes; Seijo, José Guillermo; Chromosome studies in Argentinian species of Stemodia L. (Scrophulariaceae); Univ Tokyo Cytologia; Cytologia; 67; 3; 9-2002; 261-266
0011-4545
1348-7019
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.jstage.jst.go.jp/article/cytologia/67/3/67_3_261/_article
info:eu-repo/semantics/altIdentifier/doi/10.1508/cytologia.67.261
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 Univ Tokyo Cytologia
publisher.none.fl_str_mv Univ Tokyo Cytologia
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
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score 13.069144

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