Table I.
The effect of daylength and temperature on Chl fluorescence parameters
Fv/Fm, qO, and qN, measured under saturating light conditions (1,000 μmol photons m−2 s−1); n = 8 ± se. Two-way ANOVA analysis indicates statistically significant differences due to daylength, temperature, or an interactive effect of both factors. •, ▪, and *, Significant differences due to daylength, temperature, and their interactive effect, respectively. One symbol, P ≤ 0.05; two symbols, P ≤ 0.01; three symbols, P ≤ 0.001; n.s., not significant.
| Treatment
|
Significance
|
Interactive Effect | |||||
|---|---|---|---|---|---|---|---|
| LD/HT | SD/HT | LD/LT | SD/LT | Daylength | Temp | ||
| Fv/Fm | 0.80 ± 0.01 | 0.72 ± 0.02 | 0.51 ± 0.05 | 0.39 ± 0.02 | • • • | ▪ ▪ ▪ | n.s. |
| qO | 0.36 ± 0.03 | 0.52 ± 0.02 | 0.35 ± 0.05 | 0.38 ± 0.03 | • • | ▪ | * |
| qN | 0.93 ± 0.01 | 0.96 ± 0.01 | 0.74 ± 0.06 | 0.71 ± 0.05 | n.s. | ▪ ▪ ▪ | n.s. |