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Sitka and interior spruce with demonstrated resistance to the white pine weevil (Pissodes strobi) have been identified and are being used in breeding programs. However, some trees that are resistant to weevil may also be resistant to other pests, while other trees may be more susceptible. In order to determine the susceptibility of weevil resistant spruce to other insect pests, ground surveys were conducted in genetic trials established by the BC Ministry of Forests. Data were collected from the top ten weevil resistant and susceptible families or clonal lines at three Sitka spruce plantations as well as one white and one interior spruce plantation. At all sites weevil resistant trees had superior stem form and height growth compared to weevil susceptible trees. Incidence of damage by insect pests other than weevil was not influenced by the trees? weevil resistance status at any of the sites.
submitted by René Alfaro and Lara van Akker.
Alfaro, René I., VanAkker, Lara. 2005. Susceptibility of weevil resistant spruce to damage by other insect pests: summary report. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report
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