| Shoot dry weight | δ13C value | ||||
| Panicle | Flag leaf | Culm | Straw | Root | |
| “Nipponbare” | −0.68* | −0.61 | −0.57 | −0.60 | −0.67* |
| “Kasalath” | −0.83** | −0.61 | −0.80** | −0.77** | −0.76* |