Table 2.
Effect of eCO2 on soybean seed element concentrations at R6 and R8.
| R6 |
R8 |
||||
|---|---|---|---|---|---|
| Cultivar | aCO2 | eCO2 | aCO2 | eCO2 | |
| Mg | ZK-1 | 4.96 | 5.93∗∗ | 6.39 | 7.31∗∗ |
| mg/g | ZK-2 | 5.66 | 6.96∗ | 5.65 | 6.09n.s. |
| ZK-3 | 4.96 | 6.03∗ | 5.96 | 6.53n.s. | |
| HD | 6.96 | 7.30∗ | 7.41 | 8.75∗ | |
| P | ZK-1 | 9.60 | 9.70n.s. | 14.65 | 12.72n.s. |
| mg/g | ZK-2 | 8.77 | 8.96n.s. | 11.40 | 12.17n.s. |
| ZK-3 | 7.79 | 7.87n.s. | 10.34 | 10.29n.s. | |
| HD | 8.45 | 9.44∗∗ | 13.15 | 12.48n.s. | |
| S | ZK-1 | 6.61 | 7.28∗ | 7.87 | 7.92n.s. |
| mg/g | ZK-2 | 5.25 | 5.94∗ | 8.02 | 8.98∗∗ |
| ZK-3 | 6.27 | 6.32n.s. | 7.79 | 8.63∗ | |
| HD | 6.21 | 7.42∗∗ | 8.27 | 9.00∗ | |
| K | ZK-1 | 25.0 | 28.2∗∗ | 34.3 | 34.1n.s. |
| mg/g | ZK-2 | 20.7 | 25.2∗ | 30.8 | 30.6n.s. |
| ZK-3 | 24.5 | 26.3n.s. | 32.3 | 32.1n.s. | |
| HD | 24.9 | 26.4∗∗ | 35.9 | 34.1n.s. | |
| Ca | ZK-1 | 3.77 | 4.64n.s. | 5.50 | 5.68n.s. |
| mg/g | ZK-2 | 3.29 | 3.60n.s. | 5.10 | 5.42∗∗ |
| ZK-3 | 4.07 | 5.45∗∗ | 3.82 | 3.85n.s. | |
| HD | 3.27 | 4.36∗∗ | 4.52 | 4.63n.s. | |
| Mn | ZK-1 | 20.4 | 23.9∗∗ | 16.9 | 18.4∗∗ |
| ug/g | ZK-2 | 15.5 | 15.9∗∗ | 14.6 | 14.8∗∗ |
| ZK-3 | 19.9 | 18.2∗∗ | 18.4 | 16.1∗∗ | |
| HD | 20.2 | 24.8∗∗ | 29.1 | 27.6∗∗ | |
| Zn | ZK-1 | 36.6 | 33.1∗∗ | 43.3 | 42.7∗ |
| ug/g | ZK-2 | 35.3 | 40.2∗∗ | 43.2 | 42.7n.s. |
| ZK-3 | 38.0 | 29.4∗∗ | 42.2 | 41.4∗∗ | |
| HD | 35.3 | 41.7∗∗ | 44.8 | 42.6∗∗ | |
| Fe | ZK-1 | 49.8 | 45.2∗∗ | 63.4 | 59.5∗ |
| ug/g | ZK-2 | 51.5 | 47.6∗∗ | 63.8 | 59.7∗ |
| ZK-3 | 45.2 | 42.7∗ | 55.1 | 53.2∗ | |
| HD | 45.1 | 39.9∗∗ | 54.1 | 46.2∗ | |
| Cu | ZK-1 | 22.9 | 20.5n.s. | 23.1 | 25.5∗∗ |
| ug/g | ZK-2 | 20.6 | 20.5n.s. | 18.6 | 19.2∗∗ |
| ZK-3 | 23.2 | 21.6n.s. | 24.4 | 23.5∗ | |
| HD | 20.2 | 20.5n.s. | 25.9 | 22.7∗ | |
∗, ∗∗, and n.s. indicate significance at 0.05, 0.01 level, and non-significant difference (t-test) between aCO2 and eCO2, respectively, for individual cultivars.