Relationships between growth stress and wood properties in Poplar 1 I - 69 ( Populus deltoides Bartr . cv . ” Lux ” ex I - 69
نویسندگان
چکیده
*Corresponding author: [email protected], 8 Tel +33-4 6714 4918 9 Fax +33-4 6714 4792 10 11 2008, Annals of Forest Sciences, 65, 307 12 13 Abstract Six inclined poplar I-69 (Populus deltoids cv. I-69/55) trees were collected for studying the influence 14 of growth stress level on wood properties. Growth stress indicator (GSI) was measured at 8 positions around the 15 periphery of each trunk at breast height and corresponding wood samples were obtained. Wood anatomical, 16 physico-mechanical and chemical characteristics were measured including cell diameter, fibre length, double 17 wall thickness excluding gelatinous layer, lumen diameter after gelatinous layer removal, proportion of wood 18 tissues, basic density, FSP, MOE, compressive strength, shrinkage and chemical composition. Each property 19 was regarded in relation to the growth stress level to be discussed. 20 Key-words: populus deltoids cv. I-69/55, poplar, tension wood, growth stress, wood property 21 22
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