Figure 8.

TPS10 plants grow similarly to wild-type plants both alone and in competition and do not affect their neighbors’ growth differently than wild-type competitors (mean ± sem, n = 10). Rosette diameter (A and B) and stalk length (C and D) of plants grown individually (A and C) were greater than for plants grown in competition (B and D) for all lines (statistical analyses in Supplemental Table S5) but differed little between either of two independent lines of TPS10 and the wild type. Within competing pairs, neither rosette diameter nor stalk length were affected by neighbor identity (Supplemental Table S5). Line 10-4 had smaller rosettes than the wild type or TPS10 line 10-3 on day 34 postgermination when grown in competition. The Holm-Bonferroni method was used to correct for two to four tests of each data set (effect of line within individuals or competing pairs, effect of neighbor within competing pairs, effect of competition, and post hoc pairwise tests). ns, Not significant, v., versus; WT, wild type. **, Corrected P value < 0.01 in a Wilcoxon rank sum test after a significant result (corrected P = 0.0024) in a Kruskal-Wallis test among lines.