Table 7.
Effect of aspartic acid (Asp) on shoot length (SL), total leaves area per plant (LA), and shoot dry weight per plant (SDW) in wheat plants grown under salt stress (NaCl) for 60 days.
| Treatment | SL | LA | SDW | |
|---|---|---|---|---|
| (cm) | (dm2) | (g plant-1) | ||
| NaCl (mM) | ||||
| 0 | 56.7† a | 1.79 a | 2.24 a | |
| 30 | 53.4 b | 1.30 b | 1.63 b | |
| 60 | 36.6 c | 0.69 c | 0.86 c | |
| Asp (mM) | ||||
| 0.0 | 44.0 c | 0.93 d | 1.17 d | |
| 0.4 | 48.8 b | 1.19 c | 1.49 c | |
| 0.6 | 52.1 a | 1.36 b | 1.71 b | |
| 0.8 | 50.8 a | 1.55 a | 1.94 a | |
| NaCl (mM) | Asp (mM) | |||
| 0 | 0.0 | 52.5 cd | 1.23 ef | 1.54 ef |
| 0 | 0.4 | 56.9 ab | 1.77 c | 2.21 c |
| 0 | 0.6 | 58.1ab | 1.94 b | 2.43 b |
| 0 | 0.8 | 59.4 a | 2.23 a | 2.79 a |
| 30 | 0.0 | 48.8 d | 1.13 f | 1.41 f |
| 30 | 0.4 | 55.6 abc | 1.25 ef | 1.56 ef |
| 30 | 0.6 | 55.0 bc | 1.31 e | 1.64 e |
| 30 | 0.8 | 54.4 bc | 1.51 d | 1.89 d |
| 60 | 0.0 | 30.6 g | 0.44 h | 0.55 h |
| 60 | 0.4 | 33.8 g | 0.56 h | 0.70 h |
| 60 | 0.6 | 43.1 e | 0.84 g | 1.05 g |
| 60 | 0.8 | 38.8 f | 0.91 g | 1.13 g |
†Mean values within the same column for each trait with the same lower-case letter are not significantly different according to Tukey’s honestly significant difference (HSD) test at p ≤ 0.05. Measurements were done after 75 days after sowing.