Table 5.
Growth and energy parameters measured 15 days after light treatments.
| Target ETR | Shoot fresh weight (g) | Shoot dry weight (g) | Leaf chlorophyll content | Leaf anthocyanin content | Total energy use (kWh) | Energy use efficiency (g FW·kWh-1) |
Energy use efficiency (g DW·kWh-1) |
|---|---|---|---|---|---|---|---|
| BFB-ETR 100 | 177 ± 11 | 8.07 ± 0.49 | 9.67 ± 0.41 | 3.63 ± 0.09 | 8.08 | 21.9 ± 1.4 a | 1.00 ± 0.06 a |
| BFB-ΦPSII 0.68 | 157 ± 13 | 7.54 ± 0.60 | 9.09 ± 0.19 | 3.63 ± 0.15 | 8.73 | 18.0 ± 1.5 b | 0.86 ± 0.07 ab |
| ML-ETR 100 | 180 ± 12 | 8.31 ± 0.57 | 10.17 ± 0.46 | 4.00 ± 0.09 | 9.40 | 19.1 ± 1.3 ab | 0.88 ± 0.06 ab |
| ML-ΦPSII 0.68 | 179 ± 12 | 8.38 ± 0.42 | 9.79 ± 0.41 | 3.87 ± 0.16 | 9.86 | 18.2 ± 1.2 ab | 0.85 ± 0.04 ab |
| PPFD 350 | 171 ± 6 | 7.70 ± 0.24 | 9.68 ± 0.35 | 3.71 ± 0.15 | 9.67 | 17.7 ± 0.6 b | 0.80 ± 0.02 b |
| P-values | 0.23 | 0.38 | 0.37 | 0.079 | 0.006 | 0.011 |
Parameters include shoot fresh weight, shoot dry weight, leaf chlorophyll and anthocyanin content, total energy use, and energy use efficiency.
Values are means ± standard errors (n = 5). Different letters within each column indicate significant differences at α = 0.05, according to Tukey’s HSD test.