Table 3.
Effects of different drought stress induced by polyethylene glycol (PEG-6000) treatments on Cadmium (Cd) accumulation in XM (high-grain Cd-accumulating genotype) and YM (low-grain Cd-accumulating genotype) under 100 µmol L−1 of Cd stress.
| Treatment | Cd Accumulation (µg) | ||
|---|---|---|---|
| Roots | Shoots | Whole Plants | |
| Cd-only XM | 12.713 ± 1.893 a | 24.880 ± 3.596 a | 37.593 ± 5.053 a |
| Cd-only YM | 10.621 ± 1.280 ab | 22.383 ± 3.180 a | 33.004 ± 4.387 a |
| Cd + 5% PEG-6000-XM | 9.009 ± 0.371 b | 9.176 ± 1.018 b | 18.184 ± 0.836 b |
| Cd + 5% PEG-6000-YM | 11.136 ± 2.257 ab | 9.637 ± 0.874 b | 20.773 ± 2.947 b |
| Cd + 10% PEG-6000-XM | 5.222 ± 0.326 c | 5.233 ± 0.431 cd | 10.455 ± 0.306 cd |
| Cd + 10% PEG-6000-YM | 5.194 ± 0.508 c | 8.029 ± 1.002 bc | 13.223 ± 1.385 c |
| Cd + 15% PEG-6000-XM | 4.689 ± 0.905 c | 2.158 ± 0.442 d | 6.847 ± 1.136 d |
| Cd + 15% PEG-6000-YM | 3.705 ± 0.475 c | 2.289 ± 0.195 d | 5.994 ± 0.656 d |
| Significance based on two-way ANOVA (p-value) | |||
| Varieties | 0.630 | 0.768 | 0.984 |
| Stress Level | 0.000 | 0.000 | 0.000 |
| Varieties * Stress Level | 0.049 | 0.134 | 0.097 |
The different letters indicate significant differences at p < 0.05 according to a least significant difference (LSD) test. * means the interaction between Varieties and Stress level.