Note: SRL: specific root length.
Figure 1. Factor analysis of seven root traits.
Figure 2. Effects of water addition on total root length (A), root surface area (B), root volume (C) and root biomass (D). Bars with the same letters were not significantly different (P > 0.05) using Tukey’s test. Error bars indicate standard error of means. W1 = 25 % FMC, W2 = 75 % FMC.