Figure 3.

The expression of ADC gene in developing zygotic embryos of Scots pine in 2003. The expression was quantified by real-time PCR and normalized by the expression of the ACT gene. Observed relative ADC gene expression is presented relative to the effective temperature sum (d.d.) in clones K884 (•) and K818 (○) with the fitted regression lines (solid for K884, dashed for K818). There are three replicates per clone and per sampling date, except the missing data set of clone K818 on sampling date II.