Figure 3. Effects of cluster fragmentation on total root length (A), root surface area (B), root volume (C), root tips (D) and root biomass (E). Bars with the same letters were not significantly different (P > 0.05) using Tukey’s test. Error bars indicate standard error of means. C1 = individual with single ramet, C2 = individual with three ramets.

Figure 4. Effects of N addition on total root length (A), root surface area (B) and root tips (C). Bars with the same letters were not significantly different (P > 0.05) using Tukey’s test. Error bars indicate standard error of means. N1 = 15 mg N / kg, N2 = 120 mg N / kg.

Figure 5. Effects of P addition on root surface area (A), root volume (B) and root tips (C). Bars with the same letters were not significantly different (P > 0.05) using Tukey’s test. Error bars indicate standard error of means. P1 = 2 mg P₂O₅ / kg, P2 = 24 mg P₂O₅ / kg.

Figure 6. Effects of water addition × nitrogen addition (A) and water addition × phosphorus addition \(\ \)(B) on specific root length. 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. P1 = 2 mg P₂O₅ / kg, P2 = 24 mg P₂O₅ / kg.