Canadian Forest Service Publications
Evidence of resistance to hemlock dwarf mistletoe (Arceuthobium tsugense) in western hemlock (Tsuga heterophylla) clones. 1993. Smith, R.B.; Wass, E.F.; Meagher, M.D. European Journal of Forest Pathology 23: 163-170.
Issued by: Pacific Forestry Centre
Catalog ID: 3306
Availability: Order paper copy (free)
Records from western hemlock (Tsuga heterophylla) trees naturally exposed to infection by hemlock dwarf mistletoe (Arceuthobium tsugense) and controlled inoculations of grafted branch scions from a selection of these trees indicated a repeatability of the levels of resistance to the disease in the clonal material. Evidence pointed to a resistance mechanism operating within, rather than outside, the host branch.