Forest Genetics Projects

Incorporation of Genetic Worth (GW) into TIPSY: A procedure that incorporates the genetic worth of the seedlots (or vegetative lots) into TIPSY assists foresters with predicting the yields of operational plantations established with genetically improved stock. It has been developed and adopted for timber supply analysis in the province, using the quantitative genetic approaches outlined in the paper by Xie and Yanchuk (2003)¹. Licensees in B.C. now have the ability to insert GW values from improved seedlots to evaluate the growth and yield implications for timber supply planning purposes using this feature in TIPSY. For example, the screen below shows the differences in merchantable volume predicted with the use of GW = 18 seed of interior spruce (site index = 20) in the Prince George area.

To obtain more information on how TIPSY incorporates GW, download TIPSY and click on the Help menu.