Fig. 4: Gene expression analysis (indicated as normalized relative expression) of the MYB TF-encoding genes.

A results relative to 2016, (B) results obtained on the samples harvested in 2017, (C) results relative to the year 2018. Error bars correspond to the standard deviation (n = 4). Different letters represent statistical significance (p-value < 0.05) among the groups of data. If a letter is shared, the difference is not significant. A one-way ANOVA followed by Tukey’s post-hoc test was performed on genes showing homogeneity and normal distribution; for the others, a Kruskal-Wallis test followed by Dunn’s post-hoc test was used. The statistical parameters in (A) are MYB10.1 F(6,20) = 34.37, p-value = 0.000; MYB11 F(5,18) = 28.26, p-value = 0.000, (B): MYB10.1 F(5,18) = 35.69, p-value = 0.000; MYB11 X2(5) = 17.46, p-value=0.004 and in (C): MYB10.1 X2(5) = 18.44, p-value = 0.002; MYB11 F(5,17) = 17.84, p-value = 0.000