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Abstract
Resprouting is an almost universal functional trait in temperate angiosperms and confers persistence at an individual level after the loss of above-ground biomass. The importance of genetic versus environmental sources of intraspecific variation in resprouting traits is largely unknown. We conducted two genetic field trials, 400 m apart in altitude, in order to sequentially assess seedling resprouting in four environmentally contrasting Argentinean [ver mas...]
dc.contributor.authorAparicio, Alejandro Gabriel
dc.contributor.authorZuki, Sebastián Maximiliano
dc.contributor.authorAzpilicueta, Maria Marta
dc.contributor.authorBarbero, Fernando Alvaro
dc.contributor.authorPastorino, Mario Juan
dc.date.accessioned2018-11-15T18:07:17Z
dc.date.available2018-11-15T18:07:17Z
dc.date.issued2015-04
dc.identifier.issn1614-2942
dc.identifier.issn1614-2950
dc.identifier.otherhttps://doi.org/10.1007/s11295-015-0847-0
dc.identifier.urihttps://link.springer.com/article/10.1007/s11295-015-0847-0
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3911
dc.description.abstractResprouting is an almost universal functional trait in temperate angiosperms and confers persistence at an individual level after the loss of above-ground biomass. The importance of genetic versus environmental sources of intraspecific variation in resprouting traits is largely unknown. We conducted two genetic field trials, 400 m apart in altitude, in order to sequentially assess seedling resprouting in four environmentally contrasting Argentinean populations of Nothofagus obliqua Mirb. (Oerst). We also performed one nursery test to determine whether populations differed in early root/shoot biomass partition, a key trade-off affecting resprouting. Initial resprouting vigour and final survival were higher in our warmer test site, located 300 m below the core range of the species. The main contrasts between populations were found for pre-clipping seedling size and resprouting profusion, the latter trait showing a clear trade-off with resprouting vigour. Site × population interactions were due mainly to the behaviour of the highest altitude population, suggesting its divergent adaptive trajectory and higher plasticity for resprouting traits. Within populations, trait heritability was low, in general. Episodic frost, which may limit resprouting vigour and final success, had a lower incidence in the altitudinal and xeric limit populations. Overall, our work revealed genetic variation between populations of N. obliqua in traits that determine the success of seedling resprouting, probably associated with divergent selection. Low trait heritability suggests limited in situ micro-evolutionary capacities for resprouting traits under ongoing climate warming; phenotypic plasticity may play an important role in population persistence at the low positions of the elevation gradients N. obliqua currently inhabits.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherSpringeres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceTree Genetics & Genomes 11 : 23. (April 2015)es_AR
dc.subjectNothofaguses_AR
dc.subjectGenéticaes_AR
dc.subjectGeneticseng
dc.subjectMedio Ambientees_AR
dc.subjectEnvironmenteng
dc.subjectPlántulases_AR
dc.subjectSeedlingseng
dc.subjectHeredabilidades_AR
dc.subjectHeritabilityeng
dc.subject.otherNothofagus obliquaes_AR
dc.titleGenetic versus environmental contributions to variation in seedling resprouting in Nothofagus obliquaes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Barilochees_AR
dc.description.filFil: Aparicio, Alejandro Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estacion Experimental Agropecuaria Bariloche; Argentinaes_AR
dc.description.filFil: Zuki, Sebastián Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentinaes_AR
dc.description.filFil: Azpilicueta, Maria Marta. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentinaes_AR
dc.description.filFil: Barbero, Fernando Alvaro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentinaes_AR
dc.description.filFil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentinaes_AR
dc.subtypecientifico


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