TAILIEUCHUNG - Báo cáo lâm nghiệp: "Variation in wood volatile compounds in a mixed oak stand: strong species and spatial differentiation in whisky-lactone content"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Variation in wood volatile compounds in a mixed oak stand: strong species and spatial differentiation in whisky-lactone content. | Ann. For. Sci. 64 2007 313-320 INRA EDP Sciences 2007 DOI forest 2007008 313 Original article Variation in wood volatile compounds in a mixed oak stand strong species and spatial differentiation in whisky-lactone content Andrei PRIDAa Alexis Ducoussob Rémy J. PETITb Gérard NEPVEUc Jean-Louis PUECHa a Unité Mixte de Recherche Science pour l ffinologie INRA 2 place Viala 34060 Montpellier France b UMR BIOGECO INRA 69 route d Arcachon 33612 Cestas Cedex France c LERFoB Laboratoire d Etude des Ressources Forêt-Bois INRA-Engref Centre INRA de Nancy 54280 Champenoux France Received 5 May 2006 accepted 4 October 2006 Abstract - The effect of species and ecological conditions on oak volatile extractive content was investigated in an evenaged 100 years stand located in western France. The sample included a total of 286 trees 118 sessile 158 pedunculate and 10 oaks with an intermediate morphology growing in contrasted environments plateau intermediate slope small valley . The main factor influencing oak extractives level is species. The effect of the local environment appears negligible. No correlation between ring width and volatile extractive content was found. Q. petraea is significantly richer than Q. robur in eugenol and whisky-lactone vs. pg g . However two groups of sessile oaks could be identified one poor and one rich in whisky-lactone. Among the latter either the cis or the trans stereoisomer was predominant suggesting that their production is not independent. A strong spatial structure was detected for whisky-lactone cis- trans- and total whisky-lactone for the two species combined but also for Q. petraea alone in the case of the cis isomer . volatile compounds oak wood Quercus robur L. Quercus petraea Liebl. within-stand variability ecological conditions Résumé - Variation des composes volatils du bois dans un peuplement mixte de chênes forte differenciation interspecifique et forte structuration spatiale de la quantité de whisky-lactone. Les .

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