Fig. 1. Juice color and PPO activities for individual clones grown in Exp. 1 and 2. Plant crop Exp. 1 sampled (a) in May 1998, (b) in September 1998, (c) ratooned clones sampled in November 1999, and (d) clones grown in Exp. 2 and sampled in June 1999. NAS, Null antisense, TC, Tissue culture clones, COM, Commercial clones. The commercial cultivars Q96 and Q117 are marked. PPO and color LSDs: Exp. 1 (n = 4) May, 0.96 and 3.94; Exp. 1 September, 0.83 and 4.21; Exp. 1 ratoon, 0.80 and 2.42; Exp. 2 (n = 3), 1.18 and 2.57 respectively. Note change of scale of x axis. Regression line is for all data in the plot and the correlation coefficient is given at the top of each panel.