Effect of CdCl
on the activities of SOD (A), APX (B), GR (C) and CAT (D) in the second leaves of rice seedlings grown under K-sufficient (control) and -deficient (−K) conditions. Rice seedlings were grown under control and − K conditions for 12 days. Control and − K seedlings were then transferred to the control and − K nutrient solution with or without 5 μM CdCl2 for 6 days, respectively. The second leaves were then used to determine enzyme activities. Bars indicate standard errors (n = 4). Values with the same letter are not significantly different at P < 0.05.