杉木家系年轮宽度及年轮密度组成性状遗传分析

利用单色软X射线木材密度计 ,分别测定 2 2个杉木优良家系年轮宽度组成性状与年轮密度组成性状。研究表明 ,杉木年轮宽度组成性状及年轮密度组成性状在家系间存在着显著或极显著差异 ;年轮宽度组成性状受中等遗传控制 ;年轮密度组成性状受中等以上遗传控制。通过遗传变异研究和遗传相关分析 ,了解杉木密度性状变异规律及其与生长的关系 ,为多性状早期选择提供依据

Genetic Analysis on the Properties of the Ring Width and Density Components of Chinese Fir Families

The quality attenuation coefficient, the ring width component (ring width, earlywood width, latewood width and latewood percentage) and the ring density component(ring density, earlywood density, latewood density, latewood density / earlywood density, the maximum wood density, the minimum wood density, the veriation rang of wood density and the gradient of wood density) of 22 families were measured by using the monochromical soft x-ray wood densitimeter.