Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Shoot development and dieback in progenies of Nothofagus obliqua. | Ann. For. Sci. 64 2007 839-844 INRA EDP Sciences 2007 DOI forest 2007068 Available online at Original article Shoot development and dieback in progenies of Nothofagus obliqua Javier PUNTIERIa b Javier GROSFELDa b Marina STECCONIb Cecilia BRI0Na María Marta Azpilicuetac Leonardo Galloc Daniel BarthELEMYd a Departamento de Botánica Universidad Nacional del Comahue Quintral 1250 8400 Bariloche Argentina b Consejo Nacional de Investigaciones Cientificas y Técnicas Argentina c Laboratorio de Genética Forestal Instituto Nacional de Tecnología Agropecuaria EEA Bariloche Argentina d INRA Unité Mixte de Recherche CIRAD-CNRS-INRA-IRD-Université Montpellier 2 botAnique et bioinforMatique de l Architecture des Plantes AMAP UMR T51 CIRAD UMR 5120 CNRS UMR 931 INRA M123 IRD UM27 UMII TA A-51 PS2 Blvd. de la Lironde 34398 Montpellier Cedex 5 France Received 29 December 2006 accepted 23 May 2007 Abstract - Shoot growth and dieback were compared among progenies of nursery-grown seedlings of Nothofagus obliqua belonging to seven progenies of the same provenance Quila-Quina Argentina . First-year shoots consisted of one growth unit GU and second-year shoots of one or two GUs. The probability of development of two GU was similar for all progenies. Progenies were different in terms of shoot size terminal bud abscission the extent of shoot dieback after shoot extension and the node of origin of the relay shoot on the first shoot. Plants with a second-year shoot consisting of two GUs had a thicker stem and more nodes than those with single-GU shoots. The selection of N. obliqua seed trees based on architectural traits suitable for forestry development at specific sites must contemplate variability among progenies and their probabilities of successful development under different conditions. shoot dieback growth unit plant architecture progeny Nothofagus Résumé - Développement et dépérissement des pousses de descendances de Nothofagus obliqua. La croissance et .
