Figure 2.
Changes in MDA (A) and proline (B) and GSH (E) content and in the activities of SOD (C), and POD (D) in the roots of alfalfa plants with (RI group) and without (NI group) rhizobium inoculation under alkali stress. Values are means of six replicates. Standard error bars annotated by different lower-case letters in the same stress type indicate significant differences at p < 0.05 according to Duncan's method.