Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability

Autores
Leguizamón, Eduardo S.; Yanniccari, Marcos; Guiamet, Juan José; Acciaresi, Horacio Abel
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Different studies have determined that environmental variation is a key factor determining the outcome of competition within plant communities. Considering the importance of the resource water in non-irrigated lands of Argentina, the aim was to determine the effects of water deficit on relative growth rate (RGR), root length ratio (RLR), gas exchange and competitive ability of Sorghum halepense populations collected in humid and subhumid regions of the Pampa plains. Under semi-controlled conditions, we compared plants of seven S. halepense populations subjected to three different levels of soil water availability during 3 wk: Field capacity (FC), 75% FC and drought (D). Moreover, total above-ground biomass of S. halepense and Zea mays plants growing together in competition was determined. It was found that those plants collected in humid or subhumid regions had greater RGR, gas exchange and RLR under FC and D, respectively. Zea mays achieved a higher competitive ability than S. halepense under FC, but plants collected in humid regions outcompeted the crop when grown at 75% FC. Sorghum halepense plants collected in subhumid regions dominated under D. Root length ratio may have favored the maintenance of high levels of gas exchange and also high RGR, thus contributing to sustain a competitive hierarchy under soil water stress.
Instituto de Fisiología Vegetal
Materia
Ciencias Agrarias
Competition
Photosynthesis
Relative growth rate
Transpiration
Weed biology
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84098
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/84098
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availabilityLeguizamón, Eduardo S.Yanniccari, MarcosGuiamet, Juan JoséAcciaresi, Horacio AbelCiencias AgrariasCompetitionPhotosynthesisRelative growth rateTranspirationWeed biologyDifferent studies have determined that environmental variation is a key factor determining the outcome of competition within plant communities. Considering the importance of the resource water in non-irrigated lands of Argentina, the aim was to determine the effects of water deficit on relative growth rate (RGR), root length ratio (RLR), gas exchange and competitive ability of Sorghum halepense populations collected in humid and subhumid regions of the Pampa plains. Under semi-controlled conditions, we compared plants of seven S. halepense populations subjected to three different levels of soil water availability during 3 wk: Field capacity (FC), 75% FC and drought (D). Moreover, total above-ground biomass of S. halepense and Zea mays plants growing together in competition was determined. It was found that those plants collected in humid or subhumid regions had greater RGR, gas exchange and RLR under FC and D, respectively. Zea mays achieved a higher competitive ability than S. halepense under FC, but plants collected in humid regions outcompeted the crop when grown at 75% FC. Sorghum halepense plants collected in subhumid regions dominated under D. Root length ratio may have favored the maintenance of high levels of gas exchange and also high RGR, thus contributing to sustain a competitive hierarchy under soil water stress.Instituto de Fisiología Vegetal2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1011-1025http://sedici.unlp.edu.ar/handle/10915/84098enginfo:eu-repo/semantics/altIdentifier/issn/0008-4220info:eu-repo/semantics/altIdentifier/doi/10.4141/cjps10202info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:56:57Zoai:sedici.unlp.edu.ar:10915/84098Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:56:58.17SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
title Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
spellingShingle Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
Leguizamón, Eduardo S.
Ciencias Agrarias
Competition
Photosynthesis
Relative growth rate
Transpiration
Weed biology
title_short Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
title_full Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
title_fullStr Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
title_full_unstemmed Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
title_sort Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability
dc.creator.none.fl_str_mv Leguizamón, Eduardo S.
Yanniccari, Marcos
Guiamet, Juan José
Acciaresi, Horacio Abel
author Leguizamón, Eduardo S.
author_facet Leguizamón, Eduardo S.
Yanniccari, Marcos
Guiamet, Juan José
Acciaresi, Horacio Abel
author_role author
author2 Yanniccari, Marcos
Guiamet, Juan José
Acciaresi, Horacio Abel
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Agrarias
Competition
Photosynthesis
Relative growth rate
Transpiration
Weed biology
topic Ciencias Agrarias
Competition
Photosynthesis
Relative growth rate
Transpiration
Weed biology
dc.description.none.fl_txt_mv Different studies have determined that environmental variation is a key factor determining the outcome of competition within plant communities. Considering the importance of the resource water in non-irrigated lands of Argentina, the aim was to determine the effects of water deficit on relative growth rate (RGR), root length ratio (RLR), gas exchange and competitive ability of Sorghum halepense populations collected in humid and subhumid regions of the Pampa plains. Under semi-controlled conditions, we compared plants of seven S. halepense populations subjected to three different levels of soil water availability during 3 wk: Field capacity (FC), 75% FC and drought (D). Moreover, total above-ground biomass of S. halepense and Zea mays plants growing together in competition was determined. It was found that those plants collected in humid or subhumid regions had greater RGR, gas exchange and RLR under FC and D, respectively. Zea mays achieved a higher competitive ability than S. halepense under FC, but plants collected in humid regions outcompeted the crop when grown at 75% FC. Sorghum halepense plants collected in subhumid regions dominated under D. Root length ratio may have favored the maintenance of high levels of gas exchange and also high RGR, thus contributing to sustain a competitive hierarchy under soil water stress.
Instituto de Fisiología Vegetal
description Different studies have determined that environmental variation is a key factor determining the outcome of competition within plant communities. Considering the importance of the resource water in non-irrigated lands of Argentina, the aim was to determine the effects of water deficit on relative growth rate (RGR), root length ratio (RLR), gas exchange and competitive ability of Sorghum halepense populations collected in humid and subhumid regions of the Pampa plains. Under semi-controlled conditions, we compared plants of seven S. halepense populations subjected to three different levels of soil water availability during 3 wk: Field capacity (FC), 75% FC and drought (D). Moreover, total above-ground biomass of S. halepense and Zea mays plants growing together in competition was determined. It was found that those plants collected in humid or subhumid regions had greater RGR, gas exchange and RLR under FC and D, respectively. Zea mays achieved a higher competitive ability than S. halepense under FC, but plants collected in humid regions outcompeted the crop when grown at 75% FC. Sorghum halepense plants collected in subhumid regions dominated under D. Root length ratio may have favored the maintenance of high levels of gas exchange and also high RGR, thus contributing to sustain a competitive hierarchy under soil water stress.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/84098
url http://sedici.unlp.edu.ar/handle/10915/84098
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0008-4220
info:eu-repo/semantics/altIdentifier/doi/10.4141/cjps10202
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1011-1025
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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