Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature
- Autores
- Norrmann, Guillermo Alberto
- Año de publicación
- 2009
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In north-eastern Argentina, Paraguay and south-eastern Brazil, morphologically intermediate plants involving Andropogon lateralis, A. bicornis, A. glaziovii, A. arenarius and A. hypogynus were found. The possibility that they were natural hybrids was tested in two ways: (1) where they were sterile, their morphology was compared with that of the putative parents, and their meiosis and reproductive behaviour were studied; (2) where they were fertile, studies of artificial hybrids were also made. Most of the hybrids were sterile. The only fully fertile combination, generating recombination and hybrid swarms, was A. lateralis × A. hypogynus. In spite of apparently normal chromosome pairing, fertility was low in all other combinations on both the male and female sides. Sterility is probably a result of ‘cryptic’ or ‘gametic sterility’, which produces complete sterility of the gametes. Many of the hybrids survive and compete successfully with the parental species in natural populations, but their sterility maintains the genetic isolation of the majority of the taxa involved. Meiotic chromosome behaviour in all the hybrids indicates that the group of species shares slightly different forms of three basic genomes. Several specimens of natural hybrids were found in historical herbarium collections. In the past, they were given the status of type specimens of at least five taxonomic entities (A. lindmanii, A. coloratus, A. lateralis var. subtilior, A. multiflorus and A. lateralis var. bogotensis). The taxonomic consequences of these findings are discussed.
Fil: Norrmann, Guillermo Alberto. 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
-
Natural Hybridization
Grasses
Cytogenetics
Bluestems
Genomes
Gramineae
Polyploidy
Reproduction
South America - 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:11336/36354
Ver los metadatos del registro completo
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Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literatureNorrmann, Guillermo AlbertoNatural HybridizationGrassesCytogeneticsBluestemsGenomesGramineaePolyploidyReproductionSouth Americahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In north-eastern Argentina, Paraguay and south-eastern Brazil, morphologically intermediate plants involving Andropogon lateralis, A. bicornis, A. glaziovii, A. arenarius and A. hypogynus were found. The possibility that they were natural hybrids was tested in two ways: (1) where they were sterile, their morphology was compared with that of the putative parents, and their meiosis and reproductive behaviour were studied; (2) where they were fertile, studies of artificial hybrids were also made. Most of the hybrids were sterile. The only fully fertile combination, generating recombination and hybrid swarms, was A. lateralis × A. hypogynus. In spite of apparently normal chromosome pairing, fertility was low in all other combinations on both the male and female sides. Sterility is probably a result of ‘cryptic’ or ‘gametic sterility’, which produces complete sterility of the gametes. Many of the hybrids survive and compete successfully with the parental species in natural populations, but their sterility maintains the genetic isolation of the majority of the taxa involved. Meiotic chromosome behaviour in all the hybrids indicates that the group of species shares slightly different forms of three basic genomes. Several specimens of natural hybrids were found in historical herbarium collections. In the past, they were given the status of type specimens of at least five taxonomic entities (A. lindmanii, A. coloratus, A. lateralis var. subtilior, A. multiflorus and A. lateralis var. bogotensis). The taxonomic consequences of these findings are discussed.Fil: Norrmann, Guillermo Alberto. 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; ArgentinaWiley2009-12info: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/11336/36354Norrmann, Guillermo Alberto; Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature; Wiley; Botanical Journal of The Linnean Society; 159; 1; 12-2009; 136-1540024-40741095-8339CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8339.2008.00904.xinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/botlinnean/article/159/1/136/2418359info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:05Zoai:ri.conicet.gov.ar:11336/36354instacron: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 10:20:05.939CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature |
title |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature |
spellingShingle |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature Norrmann, Guillermo Alberto Natural Hybridization Grasses Cytogenetics Bluestems Genomes Gramineae Polyploidy Reproduction South America |
title_short |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature |
title_full |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature |
title_fullStr |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature |
title_full_unstemmed |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature |
title_sort |
Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature |
dc.creator.none.fl_str_mv |
Norrmann, Guillermo Alberto |
author |
Norrmann, Guillermo Alberto |
author_facet |
Norrmann, Guillermo Alberto |
author_role |
author |
dc.subject.none.fl_str_mv |
Natural Hybridization Grasses Cytogenetics Bluestems Genomes Gramineae Polyploidy Reproduction South America |
topic |
Natural Hybridization Grasses Cytogenetics Bluestems Genomes Gramineae Polyploidy Reproduction South America |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
In north-eastern Argentina, Paraguay and south-eastern Brazil, morphologically intermediate plants involving Andropogon lateralis, A. bicornis, A. glaziovii, A. arenarius and A. hypogynus were found. The possibility that they were natural hybrids was tested in two ways: (1) where they were sterile, their morphology was compared with that of the putative parents, and their meiosis and reproductive behaviour were studied; (2) where they were fertile, studies of artificial hybrids were also made. Most of the hybrids were sterile. The only fully fertile combination, generating recombination and hybrid swarms, was A. lateralis × A. hypogynus. In spite of apparently normal chromosome pairing, fertility was low in all other combinations on both the male and female sides. Sterility is probably a result of ‘cryptic’ or ‘gametic sterility’, which produces complete sterility of the gametes. Many of the hybrids survive and compete successfully with the parental species in natural populations, but their sterility maintains the genetic isolation of the majority of the taxa involved. Meiotic chromosome behaviour in all the hybrids indicates that the group of species shares slightly different forms of three basic genomes. Several specimens of natural hybrids were found in historical herbarium collections. In the past, they were given the status of type specimens of at least five taxonomic entities (A. lindmanii, A. coloratus, A. lateralis var. subtilior, A. multiflorus and A. lateralis var. bogotensis). The taxonomic consequences of these findings are discussed. Fil: Norrmann, Guillermo Alberto. 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 |
In north-eastern Argentina, Paraguay and south-eastern Brazil, morphologically intermediate plants involving Andropogon lateralis, A. bicornis, A. glaziovii, A. arenarius and A. hypogynus were found. The possibility that they were natural hybrids was tested in two ways: (1) where they were sterile, their morphology was compared with that of the putative parents, and their meiosis and reproductive behaviour were studied; (2) where they were fertile, studies of artificial hybrids were also made. Most of the hybrids were sterile. The only fully fertile combination, generating recombination and hybrid swarms, was A. lateralis × A. hypogynus. In spite of apparently normal chromosome pairing, fertility was low in all other combinations on both the male and female sides. Sterility is probably a result of ‘cryptic’ or ‘gametic sterility’, which produces complete sterility of the gametes. Many of the hybrids survive and compete successfully with the parental species in natural populations, but their sterility maintains the genetic isolation of the majority of the taxa involved. Meiotic chromosome behaviour in all the hybrids indicates that the group of species shares slightly different forms of three basic genomes. Several specimens of natural hybrids were found in historical herbarium collections. In the past, they were given the status of type specimens of at least five taxonomic entities (A. lindmanii, A. coloratus, A. lateralis var. subtilior, A. multiflorus and A. lateralis var. bogotensis). The taxonomic consequences of these findings are discussed. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12 |
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/11336/36354 Norrmann, Guillermo Alberto; Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature; Wiley; Botanical Journal of The Linnean Society; 159; 1; 12-2009; 136-154 0024-4074 1095-8339 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/36354 |
identifier_str_mv |
Norrmann, Guillermo Alberto; Natural hybridization in the Andropogon lateralis complex (Andropogoneae, Poaceae) and its impact on taxonomic literature; Wiley; Botanical Journal of The Linnean Society; 159; 1; 12-2009; 136-154 0024-4074 1095-8339 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8339.2008.00904.x info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/botlinnean/article/159/1/136/2418359 |
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 |
Wiley |
publisher.none.fl_str_mv |
Wiley |
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 |
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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 |
13.070432 |