Table 3.
Effect of salinity levels (0–25–50–100 mM NaCl) and foliar applications (no foliar, K, Zn, and Si) on lavender leaf stomatal conductivity (cm/s), chlorophylls (Chl a, Chl b, Total Chl) content (mg/g fresh weight) in plants grown hydroponically in perlite.
| Salinity (NaCl) | Foliar applic. | Stomatal conductivity | Chl a | Chl b | Total Chl |
|---|---|---|---|---|---|
| 0 mM | 0 | 1.25 ± 0.44a Y | 1.60 ± 0.10a | 0.55 ±0.04a | 2.15 ±0.14a |
| +K | 1.66 ± 0.42a | 1.62 ± 0.07a | 0.56 ± 0.02a | 2.19 ± 0.09a | |
| +Zn | 1.38 ± 0.56a | 1.52 ± 0.07ab | 0.53 ± 0.02a | 2.06 ±0.10ab | |
| +Si | 1.00 ± 0.45a | 1.37 ± 0.13abc | 0.48 ± 0.05ab | 1.85 ±0.19abc | |
| 25 mM | 0 | 1.21 ± 0.62a | 1.31 ± 0.12abc | 0.45 ± 0.05ab | 1.77 ±0.17abc |
| +K | 1.71 ± 0.29a | 1.15 ± 0.12cde | 0.36 ± 0.04bcd | 1.52 ±0.16cde | |
| +Zn | 2.25 ± 0.40a | 1.21 ± 0.09bcd | 0.41 ± 0.03bc | 1.61 ±0.12bcd | |
| +Si | 2.11 ± 0.43a | 0.95 ± 0.14def | 0.32 ± 0.05cd | 1.27 ±0.19def | |
| 50 mM | 0 | 1.31 ± 0.58a | 0.81 ± 0.12efg | 0.25 ± 0.04def | 1.07 ±0.17efgh |
| +K | 1.63 ± 0.51a | 0.94 ± 0.10def | 0.30 ± 0.03cde | 1.24 ±0.13def | |
| +Zn | 2.12 ± 0.61a | 0.75 ± 0.09fgh | 0.25 ± 0.03def | 1.01 ±0.13fgh | |
| +Si | 0.93 ± 0.45a | 0.87 ± 0.17def | 0.29 ± 0.05cde | 1.16 ±0.23defg | |
| 100 mM | 0 | 1.15 ± 0.23a | 0.42 ± 0.05h | 0.14 ± 0.01f | 0.57 ± 0.06i |
| +K | 1.74 ± 0.70a | 0.71 ± 0.10fgh | 0.24 ± 0.03def | 0.96 ±0.13fghi | |
| +Zn | 0.87 ± 0.30a | 0.52 ± 0.20gh | 0.18 ± 0.02ef | 0.71 ±0.10ghi | |
| +Si | 1.77 ± 0.56a | 0.45 ± 0.08h | 0.15 ± 0.02f | 0.60 ±0.10hi | |
| SIGNIFICANCE | |||||
| Salinity (S) | ns | *** | *** | *** | |
| Foliar (F) | ns | ns | ns | ns | |
| S × F | ns | ns | ns | ns | |
values (n = 6) in columns followed by the same letter are not significantly different, P < 0.05.
indicate non-significant or significant differences at P < 0.1%, respectively, following two-way ANOVA.