Figure 6. Root diameter, mean root length, and specific root length (SRL) of Polygonum hydropiper ramets growing at two water levels and three burial depths (mean + S.E., n = 5).

(A) Root diameter. (B) Mean root length. (C). SRL. Different letters indicate significant differences among treatments. Multiple comparisons of means were performed using Tukey's test at the 0.05 significance level.