不同红松种源材质性状和生长性状的遗传变异

在东北林业大学帽儿山实验林场,选择了26个17年生红松种源实验林作为研究对象,进行了木材材质性状和生长性状的调查。材质性状包括解剖学性状和物理学性状。解剖学性状测试指标包括,管胞长度、管胞直径和管胞壁腔比。物理学性状指标测定了:生长轮宽度、晚材率和生长轮密度。生长性状方面调查了树高和胸径。统计分析结果表明:各项材质性状和生长性状指标在种源间均存在着显著差异,同时证明各项材质性状均受一定的遗传效应控制;红松的生长性状指标在不同种源间也存在着较大的变异,红松的树高和胸径也受遗传效应的控制;但是,多数材质指标表现为一定的以经向为主的地理变异规律,而红松的生长性状指标如树高和胸径均呈现出一定的纬向变异规律,无经向变异规律。图2表5参6。

Genetic variations of wood properties and growth characters of Korean pines from different provenances

Totally 26 provenance stands of 17-year-old Korean pine were selected for investigating wood properties and growth characters in Mao’ershan Experimental Forest Farm of Northeast Forestry University in 1999. The anatomical property indexes, including tracheid length, tracheid diameter and wall-indiameter ratio, and the physical property indexes, such as growth ring width, late wood percentage and growth ring density, were measured for wood properties. Growth character indexes, including tree height and diameter at breast height, were also measured. The analytical results showed that there exited obviously difference in wood property indexes between different provenances, which is suggested that wood properties are controlled by their genetic differences. The growth character indexes of Korean pines presented significant difference and they might also be controlled by their genetic differences. Most parameters of wood properties mainly varied in the direction of longitude, but the parameters of growth characters varied in the direction of latitude. Biography: WANG Hui-mei (1973-), female, assistant professor in Northeast Forestry University, Harbin 150040, P.R. China. Responsible editor: Zhu Hong