Table 1.
Effect of biopolymer-based biostimulant applications on dry weight of leaves, stems, total biomass, SPAD index, and maximum quantum use efficiency of photosystem II in dark-adapted state (Fv/Fm) of melon plants grown under greenhouse conditions.
| Biostimulant (mL plant-1) | Dry biomass (mg plant-1) |
SPAD index | Fv/Fm | ||
|---|---|---|---|---|---|
| Leaves | Stems | Total | |||
| 0.00 | 570.3 c | 32.8 | 603.1 b | 50.1 | 0.82 |
| 0.06 | 569.2 c | 37.1 | 606.3 b | 53.8 | 0.83 |
| 0.12 | 787.0 a | 31.6 | 814.6 a | 51.2 | 0.82 |
| 0.24 | 700.7 ab | 28.9 | 729.6 ab | 52.3 | 0.82 |
| 0.48 | 657.0 bc | 33.9 | 690.9 bc | 48.7 | 0.82 |
| Significance | Q∗∗ | ns | Q∗∗ | ns | ns |
| R2 | 0.53 | – | 0.53 | – | – |
Q, quadratic; NS, ∗∗Non-significant or significant at P ≤ 0.01, respectively. R2 = coefficient of determination for quadratic regression model. Different letters within each column indicate significant differences according to Duncan’s multiple range test (P = 0.05).