Table 3. Isotopic and elemental compositions of plant samples (mean±1σ).
| Treatment | Tissue | Sampling Date | δ15N (‰, AIR) | δ13C (‰, VPDB) | %N | %C |
| C0 | Leaf | 30 d | −0.3±3.6 | – | 5.1±0.7 | – |
| Leaf | 75 d | 5.5±1.4 | – | 2.7±0.6 | – | |
| Leaf | 115 d | 3.9±1.0 | −15.7±0.8 | 1.1±0.3 | 39.5±2.3 | |
| Grain | 115 d | 2.7±0.7 | −12.9±0.1 | 2.4±0.3 | 42.5±1.4 | |
| Anther | 75 d | 5.7±0.4 | −14.0±0.4 | 2.4±0.4 | 47.0±2.3 | |
| Root | 115 d | 3.6±0.9 | −15.0±0.5 | 0.8±0.2 | 44.7±1.1 | |
| Stalk | 115 d | 3.2±1.4 | −15.2±0.2 | 1.0±0.5 | 47.0±1.8 | |
| G1 | Leaf | 30 d | −5.0±10.0 | – | 4.9±0.9 | – |
| Leaf | 75 d | 32.4±2.2 | – | 4.1±0.3 | – | |
| Leaf | 115 d | 26.8±2.0 | −15.1±0.5 | 2.6±0.7 | 40.6±4.7 | |
| Grain | 115 d | 25.5±1.6 | −14.1±0.8 | 2.5±0.2 | 45.8±2.8 | |
| Anther | 75 d | 34.2±3.4 | −13.5±0.4 | 3.2±0.1 | 48.4±2.1 | |
| Root | 115 d | 33.1±4.1 | −15.2±0.3 | 1.4±0.7 | 44.2±4.2 | |
| Stalk | 115 d | 38.4±1.9 | −15.4±0.5 | 2.9±0.8 | 36.4±2.6 | |
| G2 | Leaf | 30 d | 6.0±4.3 | – | 5.7±0.4 | – |
| Leaf | 75 d | 38.2±0.9 | – | 4.8±0.2 | – | |
| Leaf | 115 d | 33.3±2.7 | −15.4±1.0 | 3.2±0.6 | 42.6±3.9 | |
| Grain | 115 d | 33.1±2.8 | −13.3±0.3 | 2.6±0.2 | 44.6±1.7 | |
| Anther | 75 d | 41.8±2.6 | −13.5±0.4 | 3.3±0.5 | 45.2±4.4 | |
| Root | 115 d | 40.1±2.6 | −14.5±0.6 | 2.1±0.7 | 41.4±1.8 | |
| Stalk | 115 d | 44.7±0.8 | −14.7±0.6 | 3.4±0.2 | 29.7±0.8 |