Table 2.
Summary of measurements taken in 2017 Merredin field trial (Merredin2017) under salt and control conditions.
Traits | Treatment | Genesis836 | Rupali | Mean | Min | Max | G | T | G × T |
Heritability (H2) |
---|---|---|---|---|---|---|---|---|---|---|
Seed yield (g) | Control | 3.7 | 3.3 | 3.7 | 0.4 | 15.6 | 0.43 | |||
Saline | 5.2 | 3.7 | 4.3 | 0.4 | 17.1 | <0.001 | <0.001 | 0.965 | 0.35 | |
Seed number | Control | 19 | 15 | 19 | 2 | 68 | 0.66 | |||
Saline | 33 | 19 | 26 | 3 | 126 | <0.001 | <0.001 | 0.771 | 0.56 | |
100-seed weight (g) | Control | 19.2 | 22 | 20 | 4 | 58.8 | 0.71 | |||
Saline | 16.6 | 18.9 | 17.7 | 6.8 | 50.7 | <0.001 | <0.001 | 0.096 | 0.78 | |
Number of total pods | Control | 18 | 17 | 19 | 5 | 66 | 0.52 | |||
Saline | 29 | 19 | 24 | 4 | 100 | <0.001 | <0.001 | 0.739 | 0.45 | |
Number of filled pods | Control | 15 | 12 | 15 | 2 | 48 | 0.58 | |||
Saline | 24 | 15 | 19 | 2 | 90 | <0.001 | <0.001 | 0.831 | 0.49 | |
Number of empty pods | Control | 3 | 5 | 4 | 0 | 35 | 0.67 | |||
Saline | 4 | 4 | 5 | 0 | 26 | <0.001 | 0.098 | 0.327 | 0.59 | |
Harvest index | Control | 0.43 | 0.31 | 0.44 | 0.04 | 3.09 | 0.31 | |||
Saline | 0.63 | 0.42 | 0.54 | 0.09 | 2.02 | <0.001 | <0.001 | 0.912 | 0.53 | |
Plant height (cm) | Control | 55.4 | 58.4 | 57.1 | 40 | 78 | 0.68 | |||
Saline | 55.2 | 53.8 | 53.5 | 26 | 82 | <0.001 | <0.001 | 0.998 | 0.64 | |
Shoot biomass (g) | Control | 9.4 | 11.1 | 9.3 | 1.7 | 21.4 | 0.49 | |||
Saline | 8.8 | 8.7 | 8.4 | 1.5 | 26 | <0.001 | <0.001 | 1 | 0.14 | |
Potassium (μmol g−1 DW) | Control | 652.2 | 611.5 | 657.6 | 389.4 | 1194.5 | 0.27 | |||
Saline | 1012.7 | 779.8 | 818.5 | 361.2 | 1806.2 | 0.555 | 0.555 | 0.943 | 0.07 | |
Sodium (μmol g−1 DW) | Control | 3.6 | 3.6 | 3.8 | 2.4 | 11.4 | 0.18 | |||
Saline | 5.4 | 5 | 5.1 | 3.1 | 11 | <0.001 | <0.001 | 0.979 | 0.41 | |
Potassium: Sodium ratio | Control | 209.5 | 193 | 199.7 | 76.1 | 1075.8 | 0.15 | |||
Saline | 196.8 | 167.6 | 178.8 | 49.5 | 492.2 | <0.001 | 0.002 | 0.701 | 0.26 | |
Chloride (μmol g−1 DW) | Control | 20.2 | 24.5 | 19.7 | 11.9 | 28 | 0.31 | |||
Saline | 38.4 | 44.6 | 43.6 | 15.6 | 126.9 | n.a | n.a | <0.001 | 0.26 | |
Necrosis (1-9) | Control | 1 | 1 | 1 | 1 | 1 | n.a | |||
Saline | 2 | 4 | 3 | 1 | 6 | n.a | n.a | <0.001 | 0.63 | |
Emergence | Control | 14 | 13 | 13 | 1 | 18 | 0.44 | |||
Saline | 14 | 14 | 13 | 0 | 16 | <0.001 | 0.21 | 0.832 | 0.54 | |
Days to flower | Control | 109 | 100 | 107 | 76 | 140 | 0.61 | |||
Saline | 110 | 97 | 107 | 78 | 144 | <0.001 | 0.298 | 0.291 | 0.67 | |
Days to podding | Control | 131 | 123 | 129 | 110 | 152 | 0.46 | |||
Saline | 130 | 126 | 128 | 112 | 149 | <0.001 | 0.004 | 0.267 | 0.47 |
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 a RIL population consisting of 198 genotypes. n.a is indicated for non-informative p-values where G × T is significant. All measurements are made on per plant basis except emergence which is scored on per plot basis. Estimates of heritability (H2) for different traits under salt and control conditions is indicated.