Table 3.
Summary of measurements (per plant) taken in 2018 Merredin field trial (Merredin2018) under salt and control conditions.
| Trait | Treatment | Genesis836 | Rupali | Mean | Min | Max | G | T | G × T |
Heritability (H2) |
|---|---|---|---|---|---|---|---|---|---|---|
| Seed yield (g) | Control | 2.9 | 2.7 | 3.3 | 2.0 | 4.8 | 0.14 | |||
| Salt | 3.0 | 2.4 | 2.7 | 0.7 | 5.7 | <0.001 | <0.001 | 0.302 | 0.09 | |
| Harvest index | Control | 0.46 | 0.43 | 0.43 | 0.33 | 0.54 | 0.61 | |||
| Salt | 0.40 | 0.37 | 0.39 | 0.23 | 0.55 | n.a | n.a | 0.006 | 0.24 | |
| Shoot biomass (g) | Control | 6.2 | 7.7 | 7.8 | 4.5 | 11.0 | 0.23 | |||
| Salt | 6.7 | 6.4 | 7.3 | 2.9 | 12.9 | <0.001 | <0.001 | 0.418 | 0.09 | |
| Potassium (μmol g−1 DW) | Control | 442.8 | 434.1 | 432.0 | 313.7 | 572.6 | 0.20 | |||
| Salt | 388.6 | 352.4 | 373.4 | 248.3 | 576.8 | <0.001 | <0.001 | 0.528 | 0.14 | |
| Sodium (μmol g−1 DW) | Control | 14.1 | 7.7 | 9.8 | 4.5 | 22.4 | 0.46 | |||
| Salt | 80.2 | 48.6 | 60.3 | 9.5 | 221.0 | n.a | n.a | <0.001 | 0.27 | |
| Potassium: Sodium ratio | Control | 31.3 | 56.6 | 48.8 | 19.0 | 82.5 | 0.19 | |||
| Salt | 4.9 | 7.3 | 8.2 | 1.7 | 28.5 | n.a | n.a | 0.025 | 0.20 | |
| Chloride (μmol g−1 DW) | Control | 63.8 | 76.6 | 72.4 | 49.0 | 100.1 | 0.05 | |||
| Salt | 380.0 | 401.3 | 365.2 | 244.9 | 535.1 | 0.6329 | <0.001 | 0.062 | 0.19 | |
| Necrosis (1-9) | Control | 1 | 1 | 1 | 1 | 1 | n.a | |||
| Salt | 6 | 5 | 5 | 3 | 8 | n.a | n.a | <0.001 | 0.24 | |
| Days to flower | Control | 114 | 101 | 108 | 90 | 122 | 0.60 | |||
| Salt | 119 | 110 | 113 | 96 | 126 | <0.001 | 0.583 | 0.599 | 0.41 | |
| Days to pod | Control | 129 | 119 | 124 | 111 | 134 | 0.53 | |||
| Salt | 131 | 126 | 128 | 118 | 139 | <0.001 | <0.001 | 0.884 | 0.38 |
Overall trait means, minimum and maximum values, and p-values for effects of genotype (G), treatment (T), and genotype by treatment interaction (G × T) are given for Genesis836, Rupali, and the RIL population consisting of 181 genotypes. n.a is indicated for non-informative p-values where G × T is significant. Estimates of heritability (H2) for different traits under salt and control conditions is indicated.