Table 1
The levels of factors for the experimental design.
| Factors | Symbol | Levels | ||
|---|---|---|---|---|
| Low (-1) | CP (0) | High (+1) | ||
| Light intensity (μmol photon m−2 s−1) | I | 50 | 100 | 150 |
| Light exposure time in 24 hours (h) | T | 10.5 | 16 | 21.5 |
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