Effects of SA on the chl (a+b) (A) and soluble protein contents (B) in <i>T. grandis</i> grown under salt stress conditions (means ± SD).

<p>Treatments: T1, distilled water without SA; T2, distilled water with 0.5 mmol SA; T3, 0.2% NaCl without SA; T4, 0.2% NaCl with 0.5 mmol SA; T5, 0.4% NaCl without SA; and T6, 0.4% NaCl with 0.5 mmol SA. Different letters indicate significant differences (<i>P</i><0.05) according to an LSD test; the same letter indicates no significant differences between the treatments, n = 5.</p

Effects of the SA treatments on the electrolyte leakage rate (A) and MDA contents (B) in <i>T. grandis</i> seedlings grown under salt stress conditions.

<p>Treatments: T1, distilled water without SA; T2, distilled water with 0.5 mmol SA; T3, 0.2% NaCl without SA; T4, 0.2% NaCl with 0.5 mmol SA; T5, 0.4% NaCl without SA; and T6, 0.4% NaCl with 0.5 mmol SA. Different letters indicate significant differences (<i>P</i><0.05) according to an LSD test, n = 5.</p

Effects of SA on the dry matter of the shoots, roots, and roots+shoots in <i>T. grandis</i> grown under salt stress (means±SD).

<p>Treatments: T1, distilled water without SA; T2, distilled water with 0.5 mmol SA; T3, 0.2% NaCl without SA; T4, 0.2% NaCl with 0.5 mmol SA; T5, 0.4% NaCl without SA; and T6, 0.4% NaCl with 0.5 mmol SA. Numbers followed by different letters indicate significant differences (<i>P</i><0.05) according to an LSD test; the same letter indicates no significant differences between the treatments, n = 5.</p><p>Effects of SA on the dry matter of the shoots, roots, and roots+shoots in <i>T. grandis</i> grown under salt stress (means±SD).</p

The appearance of whole plants in <i>T. grandis</i> seedlings.

<p>Treatments: T1, distilled water without SA; T2, distilled water with 0.5 mmol SA; T3, 0.2% NaCl without SA; T4, 0.2% NaCl with 0.5 mmol SA; T5, 0.4% NaCl without SA; and T6, 0.4% NaCl with 0.5 mmol SA.</p

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.</p

Effects of SA treatments on the net photosynthetic rate (Pn), internal carbon dioxide concentration (Ci), transpiration rate (Tr), and stomatal conductance (Gs) in <i>T. grandis</i> grown under salt stress conditions.

<p>Treatments: T1, distilled water without SA; T2, distilled water with 0.5 mmol SA; T3, 0.2% NaCl without SA; T4, 0.2% NaCl with 0.5 mmol SA; T5, 0.4% NaCl without SA; and T6, 0.4% NaCl with 0.5 mmol SA. Numbers followed by different letters indicate significant differences (<i>P</i><0.05) according to an LSD test, n = 5.</p><p>Effects of SA treatments on the net photosynthetic rate (Pn), internal carbon dioxide concentration (Ci), transpiration rate (Tr), and stomatal conductance (Gs) in <i>T. grandis</i> grown under salt stress conditions.</p

Effects of SA on the RWC (A) and proline content (B) in <i>T. grandis</i> grown under salt stress conditions (means ± SD).

<p>Treatments: T1, distilled water without SA; T2, distilled water with 0.5 mmol SA; T3, 0.2% NaCl without SA; T4, 0.2% NaCl with 0.5 mmol SA; T5, 0.4% NaCl without SA; and T6, 0.4% NaCl with 0.5 mmol SA. Different letters indicate significant differences (<i>P</i><0.05) according to an LSD test; the same letter indicates no significant differences between the treatments, n = 5.</p

Influence of the SA treatments on the SOD (A), CAT (B), and POD (C) activities in <i>T. grandis</i> grown under salt stress conditions.

<p>Treatments: T1, distilled water without SA; T2, distilled water with 0.5 mmol SA; T3, 0.2% NaCl without SA; T4, 0.2% NaCl with 0.5 mmol SA; T5, 0.4% NaCl without SA; and T6, 0.4% NaCl with 0.5 mmol SA. Different letters indicate significant differences (<i>P<0.05</i>) according to an LSD test, n = 5.</p