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Abstract
Global climate change (CC) is an evolutionary challenge for natural tree populations. Scientific experts forecast an increase in temperature and a decrease in precipitation in the Argentine Patagonian Cordillera. Knowledge of the variation of adaptive traits at the seedling stage is crucial to prediction the adaptability of forest tree species. We aim to analyze genetic variation in root and shoot quantitative traits among and within natural populations [ver mas...]
dc.contributor.authorDuboscq Carra, Virginia Gisela
dc.contributor.authorLetourneau, Federico Jorge
dc.contributor.authorPastorino, Mario Juan
dc.coverage.spatialArgentina (nation)
dc.date.accessioned2018-06-07T14:00:37Z
dc.date.available2018-06-07T14:00:37Z
dc.date.issued2018-05
dc.identifier.issn0169-4286
dc.identifier.issn1573-5095
dc.identifier.urihttp://hdl.handle.net/20.500.12123/2566
dc.identifier.urihttps://link.springer.com/article/10.1007/s11056-018-9647-3
dc.description.abstractGlobal climate change (CC) is an evolutionary challenge for natural tree populations. Scientific experts forecast an increase in temperature and a decrease in precipitation in the Argentine Patagonian Cordillera. Knowledge of the variation of adaptive traits at the seedling stage is crucial to prediction the adaptability of forest tree species. We aim to analyze genetic variation in root and shoot quantitative traits among and within natural populations of two key North Patagonian forest species, in order to evaluate their ability to deal with CC through adaptation. We established two common garden nursery trials: (1) 81 open pollinated families of Nothofagus obliqua from eight natural populations, and (2) 74 families of Nothofagus alpina from seven populations. At the end of the first growing season we measured shoot height, diameter, root length and root and stem dry biomass; we also estimated foliage biomass. In addition the root to stem ratio, specific root length and the root to shoot ratio were calculated. For both species intra-population variation was generally low, and average differentiation was moderate, with high levels of differentiation in some traits related to drought stress, indicating low adaptation capacity but also adaptation to current stressful conditions, which means it may be possible for some populations to survive CC without changing their genetic structures. Further studies are needed, including phenotypic plasticity assays, to complete the picture.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.relationinfo:eu-repograntAgreement/INTA/PNFOR/044321/AR./Domesticación de especies forestales nativas patagónicases_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceNew Forests : 1-12 (May 2018)es_AR
dc.subjectNothofaguses_AR
dc.subjectPlántulases_AR
dc.subjectSeedlingseng
dc.subjectCambio Climático
dc.subjectClimate Changeeng
dc.subject.otherGenética Forestales_AR
dc.titleLooking at the forest from below: the role of seedling root traits in the adaptation to climate change of two Nothofagus species in Argentinaes_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: Duboscq-Carra, Virginia Gisela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área Forestal; Argentinaes_AR
dc.description.filFil: Letourneau, Federico Jorge. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área Sistemas Forestales. Campo Experimental Forestal San Martín; Argentinaes_AR
dc.description.filFil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área Sistemas Forestales; Argentinaes_AR
dc.subtypecientifico


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