| Iron toxicity score | |||||
T2 | T3 | T4 | ||||
| R | P > |r| | R | P > |r| | R | P > |r| |
Average width of 10 roots | - | - | −0.86 | 0.02 | −0.68 | 0.02 |
Average length of 10 roots | - | - | −0.78 | 0.01 | 0.30 | 0.38 |
Mass of 10 roots | - | - | 0.28 | 0.46 | −0.95 | <0.0001 |
Root density | - | - | −0.29 | 0.44 | −0.55 | 0.09 |
Mass of 10 roots | - | - | −0.32 | 0.38 | −0.27 | 0.43 |
Number of root ramification | - | - | - | - | - | - |
Iron toxicity score on the plante | - | - | 0.91 | <0.0001 | 0.91 | <0.0001 |