Table 2.
Effects of exogenous GR24 treatments on the growth parameters of cucumber seedlings under low light stress
| Treatments | Fresh weight/(g·plant− 1) | Dry weight/(g·plant− 1) | ||||
| Shoot | Root | Total | Shoot | Root | Total | |
| Cont | 7.59 ± 1.70a | 3.44 ± 0.51a | 11.03 ± 1.32a | 1.23 ± 0.22a | 0.14 ± 0.02a | 1.37 ± 0.20a |
| Cont+ GR24 | 7.54 ± 0.90a | 3.46 ± 0.83a | 11.00 ± 0.88a | 1.20 ± 0.09a | 0.16 ± 0.02a | 1.36 ± 0.08a |
| LL | 3.86 ± 0.78c | 1.42 ± 0.27c | 5.28 ± 0.64c | 0.44 ± 0.07c | 0.06 ± 0.02c | 0.50 ± 0.06c |
| LL + GR24 | 4.83 ± 0.57b | 1.82 ± 0.41b | 6.65 ± 0.52b | 0.67 ± 0.03b | 0.08 ± 0.03b | 0.75 ± 0.03b |
| Treatments | Leaf length (cm) | Leaf width (cm) | Leaf area (cm2) | Plant height (cm) | Stem diameter (mm) | |
| Cont | 12.72 ± 0.22c | 10.06 ± 0.29b | 94.78 ± 3.06b | 25.54 ± 1.71a | 4.79 ± 0.38a | |
| Cont+ GR24 | 14.45 ± 0.83a | 11.73 ± 1.12a | 112.49 ± 9.12a | 25.57 ± 1.35a | 4.78 ± 0.37a | |
| LL | 11.08 ± 0.38d | 7.59 ± 0.24d | 62.07 ± 1.68d | 19.13 ± 1.87b | 3.05 ± 0.04c | |
| LL + GR24 | 13.37 ± 0.42b | 8.41 ± 0.53c | 68.92 ± 4.76c | 19.66 ± 1.86b | 3.56 ± 0.03b | |
Note: Each value represents the means ± SEs. Different letters in the same column indicate significant differences at P < 0.05 according to Duncan’s multiple range tests. Cont, 0 μM GR24 + 500 μmolm−2 s−1 PPFD; Cont+GR24, 10 μM GR24 + 500 μmolm− 2 s− 1 PPFD; LL, 0 μM GR24 + 60 μmolm− 2 s− 1 PPFD; LL + GR24, 10 μM GR24 + 60 μmolm− 2 s− 1 PPFD