Figure 4.

The mean number of siliques for Arabidopsis thaliana under growth room conditions (20°C, 8 hr of incandescent light) on the University of Maryland College Park campus. Means are presented in rank order for the premutation founder and 20 mutant lines generated from ethylmethane sulfonate (20 μmol/L) mutagenesis (mutant line mean sample size n = 14.80, σ of sample size = 4.12; founder n = 7). A mutant line effect was detected (p < .001). The premutation founder is circled. Error bars indicate one standard error from the mean