Table 5. Effect of Ca on the mineral element contents in shoots and roots of mustard plants 90 days after treatment with Cd.
| Mineral nutrition(μM g−1 DW) | S0 | S1 | S2 | S3 | S4 | S5 |
|---|---|---|---|---|---|---|
| Shoot S | 135±3.7a$ | 135.5±3.7a$ | 118±3.3b$ | 125±3.35c$ | 98.7±2.92d$ | 106±3.1e$ |
| Shoot Mn | 28.7±1.43a$ | 29.6±1.45a$ | 15±1.30b$ | 19.3±1.33c$ | 10.4±1.08d$ | 11.6±1.14e$ |
| Shoot Mg | 307±5.34a$ | 310±5.36a$ | 225±4.5b$ | 255±4.96c$ | 195±4.0d$ | 217±4.34e$ |
| Shoot Ca | 127±3.42a$ | 128±3.43a$ | 100±2.96b$ | 115±3.2c$ | 87±2.72d$ | 93±2.84e$ |
| Shoot K | 715±9.4a$ | 717±9.48a$ | 557±7.4b$ | 631±8.7c$ | 365±6.59d$ | 488±6.98e$ |
| Root S | 401±6.0a£ | 405±6.04a£ | 290±5.2b£ | 395±6.87c£ | 206±4.2d£ | 310±5.35e£ |
| Root Mn | 94±2.89a£ | 95±2.90a£ | 97±2.91a£ | 89±2.74b£ | 101±2.95c£ | 92±2.81a£ |
| Root Mg | 987±11.4a£ | 991±11.5a£ | 910±10.51b£ | 954±10.72c£ | 853±9.4d£ | 903±9.91b£ |
| Root Ca | 203±4.1a£ | 207±4.3a£ | 199±4.0b£ | 212±4.29c£ | 192±3.9d£ | 205±4.2a£ |
| Root K | 1510±13.3a£ | 1530±13.5a£ | 1275±11.7b£ | 1320±12.9c£ | 1030±11.8d£ | 1350±13.1c£ |
Data presented are the means ± SE (n = 5). Different letters next to the number indicate significant difference (P < 0.05) among the treatments within a developmental stage. Symbols $ and £ denote significant change between the shoots and roots in the same treatment. S0 = Control, S1 = Cd (0 mg L−1) + Ca (50 mM), S2 = Cd (200 mg L−1), S3 = Cd (200 mg L−1) + Ca (50 mM), S4 = Cd (300 mg L−1), S5 = Cd (300 mg L−1) + Ca (50 mM).; DW, dry weight.