Figure 4From: Differential effects of environment on potato phenylpropanoid and carotenoid expressionPAL activity, antioxidant capacity and transcript relative abundance. (a) PAL enzyme activity (b) antioxidant capacity in trolox equivalents (c) transcript abundance of polyamine genes and (d) phenylpropanoid genes measured by qPCR in tubers from six locations. Abbreviations as described in Figure 1. Data represents the means ± SE of three biological replicates. Values with same letter are not significantly different (p < 0.05)Back to article page