Phenotypic response of B. rapa R-o-18 to 5-AzaC treatment at E1 generation . Lines drawn to the curve indicate the dose giving 50% reduction in normal plants. The vertical line at 1.4mM indicates LSD (5%) values for comparison of means. The plotted points in (a) and (b) show the means of four replicate observations at each concentration. (a) Dosage response curve of plant stature 20 days after sowing. Lines drawn to the curve indicate the concentration that reduces survival by 50% of the overall possible reduction given an estimated (significant, p ≤ 0.05) lower asymptote. The vertical line at 1.4mM indicates LSD (5%) values for comparison of means. (b) Survival curve 60 days after sowing. (c) Frequency distribution of days to first anthesis. Mean and variance are indicated in top right of each panel.