Table 4.
Photosynthetic characters of five Gnetum species in response to different light intensities. Data are means ± standard deviation. Different letters in the same column indicate significant difference (p < 0.05).
| Species | LCP (μmol m-2 s-1) | LSP (μmol m-2 s 1) | AmaxL (μmol m-2 s-1CO2) | RdL (μmol m-2 s-1) | AQY |
|---|---|---|---|---|---|
| Gnetum gnemon | 54.27 ± 12.88b | ≥2000b | 1.41 ± 0.12a | 0.24 ± 0.01ab | 0.004 ± 0.001a |
| Gnetum luofuense | 28.50 ± 7.25a | 1100.50 ± 200.34a | 2.11 ± 0.31b | 0.25 ± 0.02b | 0.010 ± 0.002b |
| Gnetum montanum | 16.36 ± 0.55a | 950.25 ± 100.17a | 2.31 ± 0.06b | 0.17 ± 0.02a | 0.010 ± 0.002b |
| Gnetum parvifolium | 28.06 ± 12.43b | 1099.67 ± 172.63a | 2.28 ± 0.32b | 0.28 ± 0.13a | 0.010 ± 0.004a |
| Gnetum pendulum | 16.39 ± 3.36a | 950.25 ± 100.17a | 2.75 ± 0.32c | 0.16 ± 0.09a | 0.010 ± 0.002b |
Abbreviations of photosynthetic characters are as follows: LCP, light compensation point; LSP, light saturation point; AmaxL, maximum photosynthesis rate of light-response; RdL, dark respiration rate of light-response; AQY, apparent quantum yield.