关键词: 火炬松, 种源, 木材干缩性, 遗传变异, 相关分析, 材质改良

Abstract: Analyses of statistic difference about radial shrinkage,tangential shrinkage (TS), longitudinal shrinkage (LS), volume shrinkage of oven-dry wood and a ratio of tangential to radal shrinkage were made within 31 provenances of 10-year-old exotic loblolly pine.The relationships of five items above with height,diameter at breast height and volume of 310 trees,late wood percentage, wood density at 12% moisture content,density of oven-dry wood and basic density were analysed.The results showed that selecting superior fast provenances or clones with high wood density and high late wood percentage in culturing industrial timber is beneficial to reduce LS and TS of fast grown wood and increase the stablability of fast grown wood.

Key words: PINUS TEADA, PROVENANCE, WOOD SHRINKAGE, GENETIC VARIATION, RELATING ANALYSIS, WOOD IMPROVEMENT