Clonal variation of indirect cambium reaction to within-growing season temperature changes in Douglas-fir

Wood can be seen as a record of cambial activity. Within a ring, density variation from earlywood to latewood is a consequence of the within growing season climate changes. We propose a method to synchronize the within-ring density profile with within-growing season climate variables. Thanks to this synchronization, we show that Douglas-fir cambium reaction to the variation of the withingrowing season minimum temperature is variable and quite strongly genetically controlled. Such variation has a direct consequence on wood density, and thus on wood quality.