Canadian Forest Service Publications
Développement de la densité du bois chez des familles de jeunes pins blancs (Pinus strobus L.) en pollinisation libre. 2007. Larocque, G.R.; Beaulieu, J.; Daoust, G.; Zhang, S.Y. Ressources naturelles Canada, Service canadien des forêts, Centre de foresterie des Laurentides, Quebec, QC. Rapport d'information LAU-X-131. 16 p.
Issued by: Laurentian Forestry Centre
Catalog ID: 28410
CFS Availability: PDF (download)
The wood density development of open-pollinated families of juvenile eastern white pine (Pinus strobus L.) trees growing in mixed stands with grey alder (Alnus incana) was studied to determine the extent to which the variation in wood density was important among the families. The variation in the relationships between wood density and growth rate (ring width) and branch traits was also examined. White pine trees originated from 25 families located in southern Quebec, Canada, and Vermont, USA. The variation in relative wood density among families was very small. In fact, the statistical tests indicated that the family effect was significant only through its interaction with the block (effect). This suggested that the small variation in wood density among the families occurred only because of synergistic effects with growing site conditions. Despite the fact that some effects were statistically significant, the variation observed did not indicate that genetic selection for wood density could result in significant gains in wood quality of white pine. The relationship between wood density and average branch growth was more significant than the relationship between wood density and growth rate (ring width). These results highlighted the role of crown development in wood density development and supported the suggestion that wood density and growth rate (ring width) are not strongly genetically correlated.
Also available under the title:
Wood density development in young open-pollinated eastern white pine (Pinus strobus L.) families (English)