Centothecoid grasses and the evolution of panicoid spikelets

An evolutionary pathway leading to acrotonous, 2-flowered spikelets of Panicoideae has been suggested elsewhere, which involves apical reduction of many-flowered mesotonic spikelets. Current phylogenies of the grass family show a sister relationship between Panicoideae and Centothecoideae. A survey...

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Author: Rua, Gabriel Hugo
Format: article
Status:Published version
Publication Date:2003
Country:Argentina
Institution:Consejo Nacional de Investigaciones Científicas y Técnicas
Repository:CONICET Digital (CONICET)
Language:English
OAI Identifier:oai:ri.conicet.gov.ar:11336/134700
Online Access:http://hdl.handle.net/11336/134700
Access Level:Open access
Keyword:CENTOTHECOIDEAE
MORPHOLOGY
PANICOIDEAE
POACEAE
SPIKELET EVOLUTION
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
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spelling Centothecoid grasses and the evolution of panicoid spikeletsRua, Gabriel HugoCENTOTHECOIDEAEMORPHOLOGYPANICOIDEAEPOACEAESPIKELET EVOLUTIONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1An evolutionary pathway leading to acrotonous, 2-flowered spikelets of Panicoideae has been suggested elsewhere, which involves apical reduction of many-flowered mesotonic spikelets. Current phylogenies of the grass family show a sister relationship between Panicoideae and Centothecoideae. A survey of spikelet structures occurring among centothecoid grasses shows that some representatives of this group have intermediate morphologies which are consistent with that hypothesis. Chasmanthium and Bromuniola have many-flowered spikelets with a barren proximal floret, whereas Thysanolaena, Gouldochloa and Gynerium represent a series of apical reductions leading to 2-flowered spikelets. Moreover, many-flowered spikelets with 1-3 proximal male flowers followed by several female-fertile ones occur in Puelioideae, one of the early-diverging clades of the Poaceae. This fact suggests that some "panicoid" characters may have evolved long before the radiation of the Panicoideae took place.Fil: Rua, Gabriel Hugo. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Botánica Agrícola; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaSpringer Wien2003-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/134700Rua, Gabriel Hugo; Centothecoid grasses and the evolution of panicoid spikelets; Springer Wien; Plant Systematics and Evolution; 240; 1-4; 9-2003; 83-890378-2697CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00606-003-0017-yinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s00606-003-0017-yinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:58:59Zoai:ri.conicet.gov.ar:11336/134700instacron: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:34982024-05-08 13:58:59.532CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Centothecoid grasses and the evolution of panicoid spikelets
title Centothecoid grasses and the evolution of panicoid spikelets
spellingShingle Centothecoid grasses and the evolution of panicoid spikelets
Rua, Gabriel Hugo
CENTOTHECOIDEAE
MORPHOLOGY
PANICOIDEAE
POACEAE
SPIKELET EVOLUTION
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
title_short Centothecoid grasses and the evolution of panicoid spikelets
title_full Centothecoid grasses and the evolution of panicoid spikelets
title_fullStr Centothecoid grasses and the evolution of panicoid spikelets
title_full_unstemmed Centothecoid grasses and the evolution of panicoid spikelets
title_sort Centothecoid grasses and the evolution of panicoid spikelets
dc.creator.none.fl_str_mv Rua, Gabriel Hugo
author Rua, Gabriel Hugo
author_facet Rua, Gabriel Hugo
author_role author
dc.subject.none.fl_str_mv CENTOTHECOIDEAE
MORPHOLOGY
PANICOIDEAE
POACEAE
SPIKELET EVOLUTION
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
topic CENTOTHECOIDEAE
MORPHOLOGY
PANICOIDEAE
POACEAE
SPIKELET EVOLUTION
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
description An evolutionary pathway leading to acrotonous, 2-flowered spikelets of Panicoideae has been suggested elsewhere, which involves apical reduction of many-flowered mesotonic spikelets. Current phylogenies of the grass family show a sister relationship between Panicoideae and Centothecoideae. A survey of spikelet structures occurring among centothecoid grasses shows that some representatives of this group have intermediate morphologies which are consistent with that hypothesis. Chasmanthium and Bromuniola have many-flowered spikelets with a barren proximal floret, whereas Thysanolaena, Gouldochloa and Gynerium represent a series of apical reductions leading to 2-flowered spikelets. Moreover, many-flowered spikelets with 1-3 proximal male flowers followed by several female-fertile ones occur in Puelioideae, one of the early-diverging clades of the Poaceae. This fact suggests that some "panicoid" characters may have evolved long before the radiation of the Panicoideae took place.
publishDate 2003
dc.date.none.fl_str_mv 2003-09
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/11336/134700
Rua, Gabriel Hugo; Centothecoid grasses and the evolution of panicoid spikelets; Springer Wien; Plant Systematics and Evolution; 240; 1-4; 9-2003; 83-89
0378-2697
CONICET Digital
CONICET
url http://hdl.handle.net/11336/134700
identifier_str_mv Rua, Gabriel Hugo; Centothecoid grasses and the evolution of panicoid spikelets; Springer Wien; Plant Systematics and Evolution; 240; 1-4; 9-2003; 83-89
0378-2697
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://link.springer.com/article/10.1007/s00606-003-0017-y
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00606-003-0017-y
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 Springer Wien
publisher.none.fl_str_mv Springer Wien
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,811543

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