Relationship between MDA content and activities of SOD (A), CAT (B) and POD (C), and between REC and activities of SOD (D), CAT (E) and POD (F), respectively in <i>T. grandis</i> seedlings grown under 0.2% and 0.4% salt stress conditions.

<p>Each point represents the mean of 5 seedlings. *and **Significant at <i>P</i><0.05 and <i>P</i><0.01, respectively.