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Abstract
Wood density can be considered as a measure of the internal wood structure, and it is usually used as a proxy measure of other mechanical and functional traits. Eucalyptus is one of the most important commercial forestry genera worldwide, but the relationship between wood density and vulnerability to cavitation in this genus has been little studied. The analysis is hampered by, among other things, its anatomical complexity, so it becomes necessary to [ver mas...]
dc.contributor.authorBarotto, Antonio José
dc.contributor.authorMonteoliva, Silvia Estela
dc.contributor.authorGyenge, Javier
dc.contributor.authorMartinez Meier, Alejandro
dc.contributor.authorFernandez, María Elena
dc.date.accessioned2020-05-11T14:28:06Z
dc.date.available2020-05-11T14:28:06Z
dc.date.issued2018-02
dc.identifier.issn1758-4469
dc.identifier.otherhttps://doi.org/10.1093/treephys/tpx138
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7218
dc.identifier.urihttps://academic.oup.com/treephys/article/38/2/243/4644574
dc.description.abstractWood density can be considered as a measure of the internal wood structure, and it is usually used as a proxy measure of other mechanical and functional traits. Eucalyptus is one of the most important commercial forestry genera worldwide, but the relationship between wood density and vulnerability to cavitation in this genus has been little studied. The analysis is hampered by, among other things, its anatomical complexity, so it becomes necessary to address more complex techniques and analyses to elucidate the way in which the different anatomical elements are functionally integrated. In this study, vulnerability to cavitation in two races of Eucalyptus globulus Labill. with different wood density was evaluated through Path analysis, a multivariate method that allows evaluation of descriptive models of causal relationship between variables. A model relating anatomical variables with wood properties and functional parameters was proposed and tested. We found significant differences in wood basic density and vulnerability to cavitation between races. The main exogenous variables predicting vulnerability to cavitation were vessel hydraulic diameter and fibre wall fraction. Fibre wall fraction showed a direct impact on wood basic density and the slope of vulnerability curve, and an indirect and negative effect over the pressure imposing 50% of conductivity loss (P50) through them. Hydraulic diameter showed a direct negative effect on P50, but an indirect and positive influence over this variable through wood density on one hand, and through maximum hydraulic conductivity (ks max) and slope on the other. Our results highlight the complexity of the relationship between xylem efficiency and safety in species with solitary vessels such as Eucalyptus spp., with no evident compromise at the intraspecific level.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherOxford University Presses_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceTree Physiology 38 (2) : 243-251 (Febrero 2018)es_AR
dc.subjectMaderaes_AR
dc.subjectWoodeng
dc.subjectEucalyptus Globuluses_AR
dc.subjectProductos Forestaleses_AR
dc.subjectForest Productseng
dc.subjectXilemaes_AR
dc.subjectXylemeng
dc.subject.otherDensidad de la Maderaes_AR
dc.titleFunctional relationships between wood structure and vulnerability to xylem cavitation in races of Eucalyptus globulus differing in wood densityes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEstación Experimental Agropecuaria Barilochees_AR
dc.description.filFil: Barotto, Antonio José. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Monteoliva, Silvia Estela. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Gyenge, Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil. Consejo Nacional de Investigaciones Cientificas y Técnicas; Argentinaes_AR
dc.description.filFil: Martinez Meier, Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Recursos Forestales. Grupo de Ecología Forestal; Argentinaes_AR
dc.description.filFil: Fernandez, Maria Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Tandil. Consejo Nacional de Investigaciones Cientificas y Técnicas; Argentinaes_AR
dc.subtypecientifico


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