Table 4 Effects of salt stress on nitrogen metabolism related substances in Tartary buckwheat.
Item | Treatment | Seedling stage | Flowering stage | Grain filing stage | Maturate stage |
|---|---|---|---|---|---|
Nitrate nitrogen (mg g−1) | CK | 84.64 ± 2.49b | 117.87 ± 4.33b | 148.37 ± 7.75b | 102.83 ± 6.27a |
S2 | 92.57 ± 2.36a | 125.80 ± 6.19a | 155.32 ± 9.09a | 106.52 ± 6.01a | |
S4 | 82.76 ± 2.75b | 112.67 ± 3.13c | 141.29 ± 10.75c | 94.53 ± 5.28b | |
S6 | 76.69 ± 2.34c | 106.33 ± 5.69d | 135.28 ± 11.04d | 86.70 ± 5.53c | |
Ammonium nitrogen (mg g−1) | CK | 101.47 ± 6.26b | 114.80 ± 3.48b | 133.12 ± 9.55b | 98.57 ± 6.20a |
S2 | 109.23 ± 5.69a | 124.72 ± 5.16a | 141.72 ± 8.20a | 102.08 ± 5.57a | |
S4 | 87.54 ± 2.17c | 106.86 ± 4.52c | 119.16 ± 6.69c | 91.33 ± 4.76b | |
S6 | 74.44 ± 3.39d | 89.71 ± 3.34d | 105.33 ± 5.66d | 86.78 ± 4.24c | |
Soluble protein (mg g−1) | CK | 18.51 ± 0.94b | 72.93 ± 1.81b | 59.91 ± 2.27b | 46.87 ± 1.30b |
S2 | 19.30 ± 0.92a | 73.84 ± 1.56a | 61.47 ± 2.15a | 47.97 ± 1.28a | |
S4 | 18.02 ± 0.74bc | 72.02 ± 1.46c | 59.41 ± 2.22bc | 46.20 ± 1.09bc | |
S6 | 17.80 ± 0.88c | 71.14 ± 1.58d | 58.03 ± 1.30c | 45.36 ± 1.05c |
