The relative expression of <i>Bp4CL3 and Bp4CL4</i> genes in silver birch (<i>Betula pendula</i>) stems and leaves.

Values represent means and standard deviations calculated using Atub or PP2A gene as reference gene (n = 3–16). Statistical examination of data was performed using the independent-samples t test, Welch Two Sample t test or Wilcoxon test (with Bonferroni correction in the case of clonal differences). Different letters denote significant (P<0.05) difference between the clones. Stars denote significant (*P<0.05, **P<0.01, ***P<0.001) difference between transgenic line to non-transgenic clone. The relative expression of Bp4CL3 and Bp4CL4 genes in silver birch (Betula pendula) stems and leaves.