Table 1 Effects of warming and elevate CO2 (eCO2) on plant dry biomass, N concentration and chlorophyll concentrations at the silking stage.
Treatment | Shoot dry biomass (g plant−1) | Root dry biomass (g plant−1) | Leaf N concentration (mg g−1) | Stem N concentration (mg g−1) | Root N concentration (mg g−1) | Chlorophyll a (mg g−1 FW) | Chlorophyll b (mg g−1 FW) | Chlorophyll a + b (mg g−1 FW) |
---|---|---|---|---|---|---|---|---|
CK | 286 ± 1.11a | 53.6 ± 0.96a | 15.1 ± 1.01b | 9.03 ± 0.52ab | 6.35 ± 0.45ab | 11.8 ± 0.18a | 53.6 ± 0.97a | 16.6 ± 0.87a |
Warming | 293 ± 5.04a | 47.3 ± 0.19a | 16.1 ± 0.37b | 9.41 ± 0.33a | 6.84 ± 0.73ab | 9.4 ± 1.67b | 47.3 ± 0.19a | 13.6 ± 2.35b |
eCO2 | 317 ± 16.8a | 57.0 ± 7.25a | 14.1 ± 0.47b | 7.68 ± 0.18b | 5.63 ± 0.08b | 12.3 ± 0.66a | 57.0 ± 7.25a | 17.2 ± 0.27a |
Warming + eCO2 | 301 ± 8.51a | 52.2 ± 1.01a | 18.7 ± 0.03a | 11.5 ± 0.49a | 8.16 ± 0.4a | 9.4 ± 1.18b | 52.2 ± 1.01a | 13.1 ± 1.37b |