Table 2.
Effects of seawater-induced salinity on dry weight (DW) of phyllodes and roots, DW-based phyllode/root ratio, root length, salt tolerance index (STI) and stomatal density of A. auriculiformis at day 150th of salt treatment.
| Salinity levels (dS m-1) | Dry biomass (g) |
DW-based phyllode/root ratio | Root length (cm) | STI | Stomatal density (stomata mm-2) | |
|---|---|---|---|---|---|---|
| Phyllodes | Roots | |||||
| 0 | 328.21 ± 4.21a | 32.56 ± 0.36a | 10.08 ± 0.12a | 110.28 ± 0.41a | – | 60 ± 1.16a |
| 4 | 243.69 ± 2.96b | 22.42 ± 0.13b | 10.86 ± 0.07ab | 86.04 ± 0.97b | 73.78 ± 0.83a | 51 ± 0.46b |
| 8 | 201.93 ± 2.49c | 18.47 ± 0.16c | 10.93 ± 0.13b | 74.50 ± 0.45c | 61.15 ± 1.40b | 44 ± 0.85c |
| 12 | 168.96 ± 1.29d | 14.96 ± 0.19d | 11.29 ± 0.12c | 62.82 ± 1.25d | 50.89 ± 0.67c | 32 ± 1.12d |
Values are means ± standard errors of five independent replications (n = 5). Different superscripted letters within the column indicate statistically significant differences among the treatments according to a least significant difference test (P < 0.05).