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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/36354

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spelling 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)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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