TAILIEUCHUNG - Báo cáo khoa học: "Near infrared analysis as a tool for rapid screening of some major wood characteristics in a eucalyptus breeding program"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Near infrared analysis as a tool for rapid screening of some major wood characteristics in a eucalyptus breeding program. | Ann. For. Sci. 59 2002 479-490 INRA EDP Sciences 2002 DOI forest 2002032 479 Original article Near infrared analysis as a tool for rapid screening of some major wood characteristics in a eucalyptus breeding program Henri Baillèresa Fabrice Davrieuxa and Frédérique Ham-Pichavantb a CIRAD-Forêt 73 rue . Breton Maison de la Technologie BP 5035 34032 Montpellier Cedex 1 France bInstitut du Pin Université de Bordeaux I 351 Cours de la Liberation 33405 Talence Cedex France Received 20 August 2001 accepted 8 July 2002 Abstract - The cost and time required to perform traditional chemical and technological tests to assess wood characteristics for breeding programmes is still a major constraint. Near infrared diffuse reflectance spectroscopy NIRS is a highly promising method that could be adapted for rapid measurements on wood. In the Congo the best genotypes for clonal plantations are selected from hybridised eucalyptus full-sib families. From this narrow genetic base ground wood-meal samples extractive-free or not were analysed to determine quantitative relations between NIR spectral bands and extractive content lignin composition surface longitudinal growth strain and shrinkage relative to prediction accuracy. The results revealed that NIRS can be used effectively to predict characteristics linked closely with the chemical composition of wood. However the reference measurements must be accurate and must represent a wide range of values to achieve valid predictions. Methodological and metrological improvements are possible. eucalyptus breeding wood properties near infrared spectroscopy lignin shrinkage longitudinal growth stress Résumé - La spectroscopie proche infrarouge outil de diagnostic rapide de quelques propriétés de base pour le bois d eucalyptus dans un programme d amélioration génétique. L évaluation des propriétés du bois à des fins de sélection est généralement entravée par la durée et le cout des essais technologiques. Une des méthodes probablement

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