Table 1. Phenotypic variation in alkaline and salt tolerance indices measured in 257 soybean cultivars in 2009 and 2010.
| Year | Indicator | Trait | Mean | Std Dev | Minimum | Maximum | Skewness | Kurtosis |
| 2009 | STI | LR | 44.58 | 12.53 | −2.22 | 67.15 | −0.88 | 0.68 |
| LH | 51.03 | 14.67 | −0.26 | 82.48 | −0.50 | 0.16 | ||
| FWR | 63.92 | 13.51 | 9.81 | 95.71 | −0.84 | 1.58 | ||
| DWR | 51.56 | 15.67 | −8.00 | 87.37 | −0.53 | 0.31 | ||
| BS | 47.22 | 9.64 | 21.52 | 74.89 | −0.18 | −0.03 | ||
| ATI | LR | 32.24 | 18.38 | −19.36 | 89.95 | −0.04 | 0.87 | |
| LH | 19.24 | 16.86 | −42.05 | 72.88 | −0.12 | 1.13 | ||
| FWR | 62.67 | 16.96 | −8.96 | 95.06 | −1.52 | 4.08 | ||
| DWR | 49.14 | 18.98 | −30.00 | 91.04 | −0.85 | 2.13 | ||
| BS | 34.03 | 11.68 | −10.41 | 64.11 | −0.82 | 1.79 | ||
| 2010 | STI | LR | 45.26 | 9.23 | 1.70 | 69.00 | −0.72 | 1.99 |
| LH | 46.80 | 15.25 | 5.47 | 79.24 | −0.34 | −0.20 | ||
| FWR | 50.48 | 12.55 | 0.31 | 82.69 | −0.43 | 1.03 | ||
| DWR | 32.54 | 18.18 | −28.57 | 71.43 | −0.70 | 0.80 | ||
| BS | 40.46 | 10.71 | −30.65 | 66.94 | −1.12 | 7.47 | ||
| ATI | LR | 21.71 | 16.48 | −20.57 | 66.01 | 0.11 | −0.08 | |
| LH | 11.54 | 12.01 | −34.91 | 42.86 | −0.46 | 0.73 | ||
| FWR | 40.98 | 22.26 | −17.29 | 82.16 | −0.52 | −0.38 | ||
| DWR | 30.90 | 21.49 | −23.53 | 78.57 | −0.22 | −0.52 | ||
| BS | 23.52 | 13.74 | −24.13 | 50.46 | −0.47 | −0.05 |
STI: salt tolerance index; ATI: alkaline tolerance index; LR: Length of main root; FWR: fresh weights of roots; DWR: dry weights of roots; BS: biomass of seedlings; LH: length of hypocotyls.