Table 1.
Mean and standard deviation (StD) of dry weight per leaf, total number of fronds, total fresh weight, and maximum leaf length.
|
P. aureum |
T. brachycaulos |
|||||
|---|---|---|---|---|---|---|
| Variable | CO2 (ppm) | Light (μmol m-2s-1) |
Mean | SD | Mean | SD |
| Dry weight per leaf/frond (g) | 400 | 650 | 0.94 | 0.49 | 0.13 | 0.05 |
| 130 | 0.35 | 0.26 | 0.11 | 0.03 | ||
| 560 | 650 | 1.17 | 0.62 | 0.12 | 0.03 | |
| 130 | 0.46 | 0.27 | 0.12 | 0.05 | ||
| Increase in total fresh weight (g) | 400 | 650 | nd | nd | 29.28 | 10.43 |
| 130 | nd | nd | 21.92 | 10.93 | ||
| 560 | 650 | nd | nd | 32.75 | 12.61 | |
| 130 | nd | nd | 22.65 | 6.23 | ||
| Increase in max. leaf length (cm) | 400 | 650 | nd | nd | 2.18 | 1.98 |
| 130 | nd | nd | 3.99 | 2.12 | ||
| 560 | 650 | nd | nd | 1.56 | 1.25 | |
| 130 | nd | nd | 3.11 | 1.98 | ||
| No. fronds | 400 | 650 | 30.69 | 12.60 | nd | nd |
| 130 | 32.06 | 11.76 | nd | nd | ||
| 560 | 650 | 27.56 | 10.61 | nd | nd | |
| 130 | 29.25 | 11.99 | nd | nd | ||
Individual epiphytes (n = 16 per treatment) were grown for 272 days under different CO2 and light conditions. nd, no data.