Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:" Effect of species and ecological conditions on ellagitannin content in oak wood from an even-aged and mixed stand of Quercus robur L. and Quercus petraea Liebl." | Ann. For. Sci. 63 2006 415-424 INRA EDP Sciences 2006 DOI forest 2006021 415 Original article Effect of species and ecological conditions on ellagitannin content in oak wood from an even-aged and mixed stand of Quercus robur L. and Quercus petraea Liebl. Andrei PRIDAa Jean-Claude BOULETa Alexis Ducoussob Gérard NEPVEUc Jean-Louis PUECHa a Unité Mixte de Recherche Science pour l ffinologie Institut National de la Recherche Agronomique 2 Place Viala 34060 Montpellier France b Unité Mixte de Recherche BIOGECO Institut National de la Recherche Agronomique 69 Route d Arcachon 33612 Cestas Cedex France c Unité Mixte de Recherche LERFOB Institut National de la Recherche Agronomique Centre de Nancy 54280 Champenoux Cedex France Received 7 December 2004 accepted 6 January 2006 Abstract - Species effects and ecological conditions on ten heartwood ellagitannins vescalin castalin roburins A-E grandinin vescalagin and castalagin and ellagic acid were investigated in a 100 years old stand of 5 ha located in western France La Petite Charnie State Forest Sarthe . The sample included a total of 286 trees 118 sessile oaks 158 pedunculate oaks and 10 individuals with an intermediate morphology located in three ecological zones plateau slope small valley . The main factor influencing oak extractives level was botanical species. The ecological zone effect appears negligible. Pedunculate oak is generally richer in ellagitannins mg g against for sessile oak although a clear boundary between the two species cannot be established. Ellagitannin content was found to be correlated with ring width for pedunculate oak and not for sessile oak. The vescalagin castalagin ratios differed between the two species for Quercus robur against for Quercus petraea . The distribution of ellagitannin contents is not strongly structured spatially. ellagitannin oak wood Quercus robur L. Quercus petraea Liebl. variability ecological conditions Résumé - Effet de l espece et des .
