Phylogeographic origin authentication of Araucaria araucana (Mol.) K Koch seedlings through the application of spectroscopy techniques in different infrared ranges and chemometric methods

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dc.contributor.authorRojas, Macarena
dc.contributor.authorCastillo, Rosario
dc.contributor.authorGonzález Campos, Jorge
dc.contributor.authorIpinza Carmona, Roberto
dc.contributor.authorSanhueza, M.
dc.contributor.authorHasbún, Rodrigo
dc.date.accessioned2022-07-29T14:28:11Z
dc.date.available2022-07-29T14:28:11Z
dc.date.issued2022
dc.description23 páginases_CL
dc.description.abstractThe origin of seed and seedlings is an important factor for the success of restoration programs; an inadequate origin can have negative impacts on genetic and adaptive processes. A technique that allows authenticating the origin is infrared spectroscopy, a fast, accurate and low-cost tool. In Patagonia one species that required restoration programs, consequently, propagules traceability is Araucaria araucana. Phylogeographic studies showed significant differences between Chilean Andean and Coastal populations. The goal of this study was to discriminate the phylogeographic origin of A. araucana seedlings using spectroscopic and chemometric methods. Seedlings of both phylogeographic origins were cultivated in common garden and spectral information in four spectral ranges was recorded. Principal component analysis and soft independent modeling of class analogy (SIMCA) were applied. All the spectral ranges analyzed were able to discriminate phylogeographic origin, whose predictive models achieved a classification accuracy of 88–91%. The best models were SIMCA VIS–NIR and SIMCA FTIR. Wavelengths responsible for discrimination were associated with photosynthetic pigments, proteins and plant fibers. Andean seedlings have a higher content of Chlb, xanthophylls and plant fibers and the most important bands for the Coastal provenance are related to Chla and protein contents. It is shown that differences reported at the genetic level between both origins are expressed at the chemical level. In conclusion, infrared spectra obtained from Araucaria araucana, treated with chemometric methods, allow capturing the phylogeographic signal that separates Coastal and Andean origins. In the future, the resulting models could be used in restoration programs for this species.es_CL
dc.identifier.issn1573-5095
dc.identifier.otherhttps://doi.org/10.1007/s11056-022-09933-x
dc.identifier.urihttps://bibliotecadigital.infor.cl/handle/20.500.12220/32051
dc.language.isoenes_CL
dc.publisherSpringeres_CL
dc.subjectCONIFERASes_CL
dc.subjectAraucariaes_CL
dc.subjectMATERIALES DE PROPAGACIONes_CL
dc.subjectRESTAURACION
dc.subjectRECURSOS GENETICOS
dc.subjectESPECTROSCOPIA INFRARROJA
dc.titlePhylogeographic origin authentication of Araucaria araucana (Mol.) K Koch seedlings through the application of spectroscopy techniques in different infrared ranges and chemometric methodses_CL
dc.typeArtículo de revista
infor.especieAraucaria araucanaes_CL
infor.lineasdeinvestigacionConservación y Mejoramiento Genéticoes_CL
infor.operadorplves_CL
infor.publicadoenNew Forests (2022)es_CL
infor.sedeSede Bio-Bioes_CL
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Silvicultura y Manejo de Ecosistemas Forestales Nativos y Exóticos