Table 1.
Effects of increasing concentrations of Li in nutrient solution on l-ascorbic acid contents, percentage of water and IT of lettuce roots exposed to LiCl or LiOH
| Li in nutrient solution | l-Ascorbic acid (mg 100 g−1 FW) | Water content (%) | IT of roots (%) | ||
|---|---|---|---|---|---|
| Form | Concentration (mg dm−3) | Shoots | Roots | ||
| Control | 0 | 26.71 ± 1.74 (ns) | 94.1 ± 0.58 a | 95.5 ± 1.86 a | 100.0 ± 0.00 c |
| LiCl | 2.5 | 28.11 ± 1.55 | 93.1 ± 1.07 ab | 95.2 ± 1.74 ab | 113.8 ± 7.30 a |
| 20 | 28.79 ± 1.16 | 91.8 ± 0.73 b | 95.7 ± 1.45 a | 111.4 ± 8.96 ab | |
| 50 | 26.98 ± 1.07 | 88.3 ± 2.22 c | 92.9 ± 2.98 bc | 98.4 ± 5.20 c | |
| 100 | 24.14 ± 0.49 | 80.4 ± 1.58 d | 92.5 ± 2.36 cd | 63.9 ± 4.67 e | |
| LiOH | 2.5 | 26.15 ± 3.94 | 92.1 ± 0.94 ab | 94.6 ± 1.26 abc | 105.5 ± 7.68 abc |
| 20 | 25.75 ± 2.73 | 91.8 ± 1.37 ab | 95.1 ± 1.47 ab | 107.9 ± 11.52 abc | |
| 50 | 30.25 ± 3.02 | 86.2 ± 2.07 c | 94.3 ± 2.08 abc | 102.8 ± 7.25 bc | |
| 100 | 23.25 ± 0.04 | 80.9 ± 4.46 d | 90.0 ± 3.44 d | 78.6 ± 2.62 d | |
The mean values in each column marked with the same letters are not significantly different at p < 0.05, ns not significant