Canadian Forest Service Publications
Somatic embryogenesis as a delivery system for specialty products with reference to resistant Sitka spruce to the white pine weevil. 2001. El-Kassaby, Y.A.; Alfaro, R.I.; King, J.; Ying, C.C.; Yanchuk, A.; Leal, I. Pages 154-168 in Proceedings of the 26th Southern Forest Tree Improvement Conference, June 26-29, 2001, University of Georgia, Athens, GA. School of Forest Resources, University of Georgia, Athens, GA 30602.
Available from: Pacific Forestry Centre
Catalog ID: 30965
CFS Availability: PDF (download)
The recent discovery of resistant Sitka spruce (Picea sitchensis (Bong.) Carr) sources to the white pine weevil (Pissodes strobi (Peck)) in British Columbia has increased the hope of reintroducing this tree species as a regeneration option in high weevil hazard zones. In this paper, we summarize: 1- the efforts associated with the discovery of resistant sources from longterm provenance trials, 2- clonal screening to verify resistance, 3- the development of field and laboratory bio-assay methods for resistance determination, 4- preliminary research on the genetic mechanism of resistance, 5- role of somatic embryogenesis as a viable delivery system, and 6- initiatives related to the deployment of resistant stock.
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