Figure 8.

The relative expression ratio of 24 representative StNAC genes in young leaf (YL), old leaf (OL), stem and root tissues of potato determined using qRT-PCR. Relative expression ratios in different tissue samples have been calculated with reference to tissue sample in which the respective transcript exhibited the lowest expression. The relative expression values were log₁₀ transformed. qRT-PCR data were normalized using potato elongation factor 1-α gene. The name of the gene is written on the top of each bar diagram. (Error bars indicate standard deviation.)