Table 5.
Year | Cultivar | Soil salt-ion concentration | N translocation efficiency (%) | N utilization efficiency (kg kg−1) | ||
---|---|---|---|---|---|---|
Root | Stem | Leaf | ||||
2019–2020 | Yanyouza 3 | LSSC | 29.88 ± 2.61ab | 53.51 ± 2.81a | 76.69 ± 1.47a | 17.19 ± 0.18b |
HSSC | 27.88 ± 0.39ab | 45.44 ± 1.61c | 73.21 ± 0.97b | 13.76 ± 0.23c | ||
Ningza 1818 | LSSC | 29.98 ± 1.35ab | 50.57 ± 1.03b | 77.85 ± 0.77a | 17.72 ± 0.30a | |
HSSC | 29.27 ± 0.58ab | 40.33 ± 0.75d | 72.39 ± 0.98b | 14.16 ± 0.32c | ||
2020–2021 | Yanyouza 3 | LSSC | 27.04 ± 1.93b | 55.90 ± 1.88a | 75.74 ± 0.70a | 17.03 ± 0.21b |
HSSC | 28.45 ± 2.11ab | 45.19 ± 1.71c | 72.2 ± 1.42b | 13.78 ± 0.26c | ||
Ningza 1818 | LSSC | 30.29 ± 1.46a | 49.53 ± 0.90b | 76.61 ± 1.34a | 17.80 ± 0.30a | |
HSSC | 27.58 ± 0.33ab | 41.36 ± 1.65d | 72.52 ± 1.15b | 14.05 ± 0.13c | ||
ANOVA | ||||||
Soil salt-ion concentration (SSC) | ns | ** | ** | ** | ||
Cultivar (C) | ns | ** | ns | ** | ||
Year (Y) | ns | ns | ns | ns | ||
SSC*C | ns | ns | ns | ns | ||
SSC*Y | ns | ns | ns | ns | ||
C*Y | ns | ns | ns | ns | ||
SSC*C*Y | ns | ns | ns | ns | ||
Correlation analysis | ||||||
Seed N accumulation | 0.294 ns | 0.873** | 0.884** | |||
Seed yield | 0.317 ns | 0.836** | 0.885** |
LSSC and HSSC represent low soil salt-ion concentration and high soil salt-ion concentration.
Probability levels are performed by ns and ** for not significant and 0.01. Different letters within the same column indicate significant difference at p = 0.05 between different treatments during two growing seasons. Data is mean ± SE (n = 3).