Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Study on inheritance and variation of wood fibre length of Populus tomentosa clones.

Abstract

Inheritance and variation in wood fibre length (WFL) of Chinese white poplar (Populus tomentosa) clones were investigated at 4 sites, one in each of 4 Chinese provinces (Hebei, Shandong, Henan and Gansu). There were significant differences in WFL at both site and clone levels. The clonal repeatability of WFL is estimated to be 0.79, which indicates that the wood property character is under strong genetic control and can be improved by genetic means. Within-tree variation of WFL along the direction of tree height was also included. Correlation analysis of WFL in relation to other tree characteristics showed that there were significant positive correlations between WFL and several growth characteristics (volume, height, diameter at breast height and bole straightness) and a significant negative correlation between WFL and wood basic density. Selections could therefore be based on growth characteristics, wood properties or a combination of the two.