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dc.date.accessioned 2019-10-25T17:24:15Z
dc.date.available 2019-10-25T17:24:15Z
dc.date.issued 2011
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/84098
dc.description.abstract 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. en
dc.format.extent 1011-1025 es
dc.language en es
dc.subject Competition es
dc.subject Photosynthesis es
dc.subject Relative growth rate es
dc.subject Transpiration es
dc.subject Weed biology es
dc.title Growth, gas exchange and competitive ability of Sorghum halepense populations under different soil water availability en
dc.type Articulo es
sedici.identifier.other doi:10.4141/cjps10202 es
sedici.identifier.other eid:2-s2.0-80054848740 es
sedici.identifier.issn 0008-4220 es
sedici.creator.person Leguizamón, Eduardo S. es
sedici.creator.person Yanniccari, Marcos es
sedici.creator.person Guiamet, Juan José es
sedici.creator.person Acciaresi, Horacio Abel es
sedici.subject.materias Ciencias Agrarias es
sedici.description.fulltext true es
mods.originInfo.place Instituto de Fisiología Vegetal es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Canadian Journal of Plant Science es
sedici.relation.journalVolumeAndIssue vol. 91, no. 6 es
sedici.rights.sherpa * Color: verde* Pre-print del autor: si* Post-print del autor: si* Versión de editor/PDF:no* Condiciones:>>En el sitio web propio o en un repositorio institucional, o en el archivo designado por su organismo financiador>>Deben reconocerse el copyright del editor y la fuente de publicación (debe incluirse la nota de copyright de NRC Research Press')>>La versión archivada del autor no debe ser modificada una vez que ha sido aceptada para su publicación.>>La versión de editor/PDF no puede utilizarse>>Debe ir enlazado a la versión de editor* Link a Sherpa: http://sherpa.ac.uk/romeo/issn/0008-4220/es/


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)