Table 2.
Qualitative and physiological characteristics of an iceberg lettuce affected by different photoperiods at the time of harvest.
| Treatments | Total phenols | Antioxidant capacity | Vitamin C | Leaf length | Root length | Plant height |
|---|---|---|---|---|---|---|
| (mg GAE /100 g) | (µmol Trolox/g FW) | (mg/100 g) | (cm) | (cm) | (cm) | |
| 12 h/8.64 DLI | 14.90 ± 0.60 a | 7.83 ± 0.16 a | 13.13 ± 0.19 a | 20.38 ± 0.89 a | 39.62 ± 1.32 a | 58.25 ± 0.49 ab |
| 16 h/11.5 DLI | 15.27 ± 0.49 a | 8.48 ± 0.17 a | 13.28 ± 0.25 a | 17.50 ± 0.72 a | 44.63 ± 0.66 a | 65.50 ± 1.5 a |
| 20 h/14.4 DLI | 11.93 ± 0.37 b | 8.05 ± 0.14 a | 14.38 ± 0.23 c | 17.00 ± 0.42 a | 37.00 ± 2.70 a | 55.25 ± 2.22 b |
| Control | 8.23 ± 0.45 c | 6.63 ± 0.15 b | 12.10 ± 0.09 b | 13.42 ± 2.61 b | 29.43 ± 6.93 a | 43.43 ± 10.65 b |
Values are represented as means ± standard error.
Means followed by different letters denotes significant difference at p < 0.05 according to Tukey’s HSD test.