Table 4. Cd Concentration (mg kg−1 DW) in Pak choi Grown under Different Cd Levels in Seven Chinese Soils.
| Cd (mg kg−1) | Mollisols | Ustic Cambosols | Stagnic Anthrosols | Periudic Argosols | Typic Haplustalfs | Udic Ferrisols | Calcaric Regosols | |||||||
| Root | Shoot | Root | Shoot | Root | Shoot | Root | Shoot | Root | Shoot | Root | Shoot | Root | Shoot | |
| Ck | 3.41±0.64e | 1.00±0.28e | 2.42±0.45f | 0.48±0.22e | 2.73±0.28e | 0.85±0.12e | 7.26±1.10f | 1.84±0.56f | 12.35±1.68e | 4.37±1.02e | 11.81±0.78e | 6.77±0.92e | 3.11±0.66e | 1.92±0.58b |
| 1 | 5.09±0.91e | 2.53±0.76e | 6.69±0.65e | 2.06±0.98e | 4.12±0.75e | 1.92±0.94e | 21.3±2.01e | 11.00±1.57e | - | - | - | - | - | - |
| 2 | 8.92±1.09d | 4.31±0.54d | 9.30±1.29d | 4.77±0.22d | 8.34±1.11d | 3.94±0.83d | 39.33±3.86d | 28.51±2.61d | 25.41±1.79d | 12.09±1.34d | 19.41±1.27d | 10.06±1.10d | 4.24±0.99d | 2.70±0.99b |
| 4 | 14.21±0.90c | 8.34±1.11c | 14.00±1.43c | 9.01±1.06c | 13.21±1.55c | 7.06±1.06c | 68.43±3.71c | 39.12±3.06c | 39.11±2.28c | 32.51±2.51c | 33.55±1.71c | 20.89±1.46c | 10.37±1.21c | 3.46±1.10b |
| 6 | 21.24±1.20b | 11.75±1.17b | 24.36±1.11b | 17.23±1.50b | 20.21±1.80b | 11.63±1.54b | 117.76±6.53b | 68.21±4.08b | 68.00±3.96b | 41.11±3.01b | 55.53±2.67b | 31.45±2.48b | 14.41±1.03b | 6.57±0.93a |
| 8 | 38.96±1.39a | 18.11±1.12a | 43.21±2.21a | 22.22±1.51a | 28.56±1.42a | 17.63±1.37a | 169.95±8.11a | 89.21±5.70a | 118.21±6.24a | 69.21±4.11a | 85.32±4.28a | 53.73±2.88a | 18.73±1.54a | 8.13±0.87a |
Mean values followed by different letters within the same column are significantly different at P <0.05.