Populational variation in the leaf oil terpene composition of western red cedar, Thuja plicata

Abstract

Intra- and inter-populational variations in the leaf oil terpene composition of western red cedar from 29 different collection sites from most of its natural range were investigated. This cedar species has one of the lowest degrees of variability found thus far in northern North American conifer species. No significant difference was found between coastal and interior populations and only slight divergence was recorded in outlying ones.