红松种源材质性状研究

The study on wood quality of Pinus koraiensis from different provenances

对帽儿山地区 1 7年生 2 6个红松种源试验林进行了材质性状研究 ,主要包括材质性状在不同种源间遗传变异情况以及从髓心到树皮径向变异模式研究。结果表明 :红松各项材质在不同种源间均存在着极显著差异。各项材质均存在着一定的径向变异模式 ,主要表现在 :红松各种源的管胞长度、管胞直径、木材密度和晚材率总体趋势是从髓心向外呈迅速增加趋势 ,而年轮宽从髓心向外呈递减趋势。本项研究为红松材性早期选择和预测提供依据。

Totally 26 provenance stands of 17-year-old Pinus koraiensis were selected for investigating genetic variation in different provenances and the trend of radial variation of wood quality in the direction of cone to tree bark. The results showed that: there was significant difference in wood quality between different provenances; All the wood property investigated showed radial variation trend. Tracheid length,tracheid diameter, growth ring density and late wood percentage increased with higher growth ring year. But growth ring width showed reverse radial variation. This research would provide basis for early selection and prediction of Pinus koraiensis wood quality.