Natural variation of diurnal leaf growth oscillations in Arabidopsis. (a) Average amplitudes (day 2–6) of each accession. (b) correlation between reported angle and measured average amplitude, (c) averaged period (day 2–6) of each accession and (d) averaged phase of smoothed projected oscillations (day 2 – 6) for the accessions. n = 8 leaves, except for Cvi-0 n = 7 , from four plants per accession. Error bars represent SE. One-way ANOVA was used to identify significant differences between the accessions. Individual contrasts were then identified in a post-hoc Tukey test. *; P < 0.05.