Table 2.
The effects of low light intensity of different LEDs treatments on A: Assimilation rate (for harvest stage (p ≤ 0.001), for light treatments (p = 0.003), and for interaction between harvest stage and light treatments (p = 0.605)). B: Stomatal conductance (for harvest stage (p ≤ 0.001), for treatment (p = 0.072), and for interaction between harvest stage and light treatments (p ≤ 0.001)). C: transpiration rate (for harvest (p = 0.002) for light treatments (p = 0.003) and for interaction between harvest stage and light treatments (p = 0.31)). D: Shoot fresh weight (g) (for harvest stages (p = 0.001), for light treatments (p = 0.078), and interaction between harvest stage and light treatments (p = 0.069)). E: Root fresh weight (g) (for harvest (p ≤ 0.001) for light treatments (p = 0.013), and for interaction between harvest stage and light treatments (p = 0.210)), F: leaves number (for harvest stage (p ≤ 0.001), for light treatments (p = 0.07) for interaction between harvest stage and light treatments (p = 0.012)).
| Light Treatment | Harvest Stage | Growth and Physiological Parameters | ||||||
|---|---|---|---|---|---|---|---|---|
| Assimilation Rate (μmol m−2 s−1) | Stomatal Conductance (mmol m−2 s−1) | Transpiration Rate (mmol m−2 s−1) | Shoot Fresh Weight (g) | Leaves Number | Root Fresh Weight (g) | |||
| Blue/Red (B435/R663) | Harvest stage 1 | 3.18 ± 0.64 | 0.16 ± 0.016 | 3.83 ± 0.81 | 29.6 ± 2.85 | 23.25 ± 2.37 | 7.57 ± 1.19 | |
| Harvest stage 2 | 2.68 ± 0.62 | 0.09 ± 0.011 | 1.45 ± 0.1 | 75.87 ± 2.45 | 40.83 ± 3.81 | 10.18 ± 0.81 | ||
| Blue/Red (B450/R663) | Harvest stage 1 | 2.44 ± 0.31 | 0.26 ± 0.019 | 2.38 ± 0.10 | 22.69 ± 3.27 | 21.5 ± 1.90 | 1.87 ± 0.22 | |
| Harvest stage 2 | 1.04 ± 0.11 | 0.07 ± 0.007 | 0.93 ± 0.07 | 73.99 ± 2.45 | 46 ± 2.84 | 7.58 ± 0.61 | ||
| Blue/Red treatment (B/R-rich) | Harvest stage 1 | 3.12 ± 0.37 | 0.16 ± 0.016 | 3.01 ± 0.69 | 26.62 ± 2.55 | 24.12 ± 2.41 | 3.79 ± 0.36 | |
| Harvest stage 2 | 1.85 ± 0.30 | 0.11 ± 0.009 | 1.46 ± 0.10 | 44.98 ± 2.45 | 28.83 ± 3.92 | 9.05 ± 0.9 | ||
| LSD | Harvest stage | 2.41 | 0.073 | 0.54 | 30.19 | 5.06 | 2.55 | |
| Light treatment | 1.96 | Not significant | 0.44 | Not significant | Not significant | 2.08 | ||
| Interaction between light treatment and harvest stage | Not significant | 0.04 | 0.31 | Not significant | 13.01 | Not significant | ||