Family variation of biomass and root/shoot ratio in Sitka spruce (Picea sitchensis (Bong.) Carr.).

  • K. Byers School of Agricultural and Forest Sciences, University of Wales, Bangor, LL57 2UW, Wales.
  • G.J. Mayhead School of Agricultural and Forest Sciences, University of Wales, Bangor, LL57 2UW, Wales.
  • S.J. Lee Tree Improvement Branch, Forest Research, Roslin, EH25 9SY, Scotland.
Keywords: Sitka spruce, Picea sitchensis, family variation, roots, root/shoot ration, spacing, planting, biomass, silviculture.

Abstract

Twelve families of Sitka spruce (Picea sitchensis (Bong.) Carr.) were grown at 1 m x 1 m spacing on a sheltered fertile site in weed-free conditions. After 3 growing seasons, the trees were lifted and growth parameters recorded. There was a wide range of growth rates between families and blocks and significant differences were demonstrated between dry root and dry shoot biomass, root spread and rooting depth. There were no significant differences between root/shoot ratios. Despite breeding for improved above-ground characteristics, there was no evidence of this compromising factors relating to tree stability.
Published
1997-11-01
How to Cite
Byers, K., Mayhead, G., & Lee, S. (1997). Family variation of biomass and root/shoot ratio in Sitka spruce (Picea sitchensis (Bong.) Carr.). Irish Forestry. Retrieved from https://journal.societyofirishforesters.ie/index.php/forestry/article/view/9803
Section
Articles