Table 1.
Performances of plant-growth- and ion-concentration-related traits under control and salinity stress at seedling stages of the 46 rice genotypes.
| Trial | Trait | Range | Mean ± SD |
|---|---|---|---|
| Control | SFW (mg) | 96.10–777.40 | 256.17 ± 129.96 |
| SDW (mg) | 15.83–107.40 | 38.43 ± 17.50 | |
| RDW (mg) | 4.23–16.93 | 7.65 ± 2.48 | |
| SL (cm) | 22.93–59.94 | 38.29 ± 9.47 | |
| RL (cm) | 5.29–15.57 | 8.87 ± 2.42 | |
| SKC (μmol mg−1) | 0.84–1.29 | 1.06 ± 0.10 | |
| RKC (μmol mg−1) | 0.35–0.72 | 0.51 ± 0.09 | |
| Salinity stress | SDS (d) | 10.08–25.30 | 16.73 ± 3.25 |
| SIS | 2.33–9.00 | 5.25 ± 1.92 | |
| SFW (mg) | 34.47–381.73 | 112.60 ± 62.32 | |
| SDW (mg) | 10.85–74.60 | 27.08 ± 10.95 | |
| RDW (mg) | 3.35–11.47 | 5.61 ± 1.57 | |
| SL (cm) | 12.84–43.71 | 24.93 ± 5.89 | |
| RL (cm) | 4.54–16.18 | 8.49 ± 2.17 | |
| SKC (μmol mg−1) | 0.28–0.71 | 0.56 ± 0.08 | |
| SNaC (μmol mg−1) | 0.70–2.44 | 1.74 ± 0.41 | |
| SKNa | 0.20–0.98 | 0.35 ± 0.14 | |
| RKC (μmol mg−1) | 0.04–0.19 | 0.10 ± 0.03 | |
| RNaC (μmol mg−1) | 0.48–0.87 | 0.64 ± 0.09 | |
| RKNa | 0.07–0.29 | 0.16 ± 0.05 | |
| Relative value | RSFW (%) | 23.45–76.72 | 44.98 ± 12.71 |
| RSDW (%) | 45.44–106.47 | 72.74 ± 14.88 | |
| RRDW (%) | 51.08–102.15 | 74.49 ± 13.81 | |
| RSL (%) | 50.72–86.18 | 65.70 ± 6.88 | |
| RRL (%) | 73.31–170.63 | 97.76 ± 20.38 | |
| RSKC (%) | 24.99–68.44 | 53.54 ± 9.36 | |
| RRKC (%) | 6.24–37.47 | 20.58 ± 6.49 |
SDS: survival days of seedling; SIS: salt injury score; SFW: shoot fresh weight; SDW: shoot dry weight; RDW: root dry weight; SL: seedling length; RL: root length; RSFW: relative shoot fresh weight; RSDW: relative shoot dry weight; RRDW: relative root dry weight; RSL: relative seedling length; RRL: relative root length; SNaC: shoot sodium concentration; SKC: shoot potassium concentration; SKNa: ratio of potassium and sodium concentration in shoot; RNaC: root sodium concentration; RKC: root potassium concentration; RKNa: ratio of potassium and sodium concentration in root; RSKC: relative potassium concentration in shoot; RRKC: relative potassium concentration in root.