Table 1.
Effects of JA priming on plant height, FW, DW, number of tillers/plants, Tr and Pn of two wheat cultivars Mai9 (ZM9, salt-sensitive) and Yang Mai25 (YM25, salt-tolerant) under control and salinity stress conditions during two consecutive growing seasons 2019 and 2020.
| Treatments | Plant height (cm) | FW (g) | DW (g) | Number of tillers plants−1 | Tr (mmol H2O m−2 s−1) | Pn (μmol CO2 m−2 s−1) | |
|---|---|---|---|---|---|---|---|
| 2019 | |||||||
| ZM9 | Ck | 80.43 ± 2.0c | 2.53 ± 0.15b | 0.624 ± 0.03b | 6.33 ± 0.5b | 6.29 ± 0.34bc | 3.31 ± 0.38b |
| 60 μM JA | 91.50 ± 3.4b | 3.36 ± 0.15a | 0.831 ± 0.04a | 7.33 ± 0.5a | 8.32 ± 0.13a | 5.14 ± 0.5a | |
| S1 | 62.73 ± 2.4e | 1.50 ± 0.10c | 0.356 ± 0.03c | 4.33 ± 0.5c | 3.41 ± 0.20fg | 2.20 ± 0.10c | |
| S1+60 μM JA | 71.23 ± 1.3d | 2.16 ± 0.15b | 0.540 ± 0.03b | 5.66 ± 0.5b | 5.49 ± 0.31de | 3.08 ± 0.12b | |
| YM25 | Ck | 80.83 ± 1.3c | 2.59 ± 0.14b | 0.634 ± 0.02b | 6.00 ± 0.1b | 5.61 ± 0.51c-e | 3.43 ± 0.19b |
| 60 μM JA | 96.33 ± 1.7a | 3.63 ± 0.15a | 0.901 ± 0.03a | 7.33 ± 0.5a | 7.87 ± 0.32a | 5.30 ± 0.39a | |
| S1 | 63.83 ± 1.4e | 1.43 ± 0.15c | 0.348 ± 0.04c | 4.00 ± 0.10c | 3.60 ± 0.49fg | 1.92 ± 0.06c | |
| S1+60 μM JA | 73.73 ± 1.1d | 2.20 ± 0.17b | 0.533 ± 0.05b | 6.00 ± 0.3b | 5.73 ± 0.32c-e | 3.25 ± 0.17b | |
| 2020 | |||||||
| ZM9 | Ck | 79.53 ± 1.7c | 2.56 ± 0.3b | 0.628 ± 0.08b | 6.00 ± 0.3b | 6.44 ± 0.5b | 3.25 ± 0.17b |
| 60 μM JA | 96.66 ± 2.2a | 3.23 ± 0.1a | 0.798 ± 0.03a | 7.66 ± 0.5a | 7.63 ± 0.4a | 5.34 ± 0.5a | |
| S1 | 63.46 ± 3.0e | 1.50 ± 0.10c | 0.367 ± 0.02c | 4.66 ± 0.5c | 3.28 ± 0.24g | 2.38 ± 0.6c | |
| S1+60 μM JA | 72.36 ± 2.2d | 2.20 ± 0.10b | 0.526 ± 0.03b | 6.00 ± 0.3b | 5.10 ± 0.21e | 3.21 ± 0.11b | |
| YM25 | Ck | 80.53 ± 0.9c | 2.56 ± 0.15b | 0.627 ± 0.02b | 6.33 ± 0.5b | 5.41 ± 0.50de | 3.57 ± 0.16b |
| 60 μM JA | 95.06 ± 1.5ab | 3.36 ± 0.68a | 0.833 ± 0.16a | 7.66 ± 0.5a | 7.92 ± 0.30a | 5.76 ± 0.9a | |
| S1 | 61.36 ± 3.5e | 1.53 ± 0.15c | 0.377 ± 0.04c | 4.33 ± 0.5c | 4.07 ± 0.17f | 2.06 ± 0.07c | |
| S1+60 μM JA | 73.16 ± 2.9d | 2.30 ± 0.10b | 0.570 ± 0.01b | 6.33 ± 0.5b | 5.92 ± 0.5b-d | 3.23 ± 0.15b | |
| Year (Y) | Ns | Ns | ns | ns | *** | *** | |
| Cultivars (C) | ** | Ns | ns | ns | ** | *** | |
| Treat. (T) | *** | *** | *** | *** | *** | *** | |
| Y × C | *** | Ns | ns | ns | *** | *** | |
| Y × T | ** | Ns | ns | ns | *** | *** | |
| C × T | * | Ns | ns | ns | *** | *** | |
| Y × C × T | ** | Ns | ns | ns | *** | *** | |
Means sharing the same letters, for a parameter during a year, do not differ significantly at P ≤ 0.05 among the studied factors after the Student–Newman–Keul test.
*P < 0.05; **P < 0.001; ***P < 0.0001.
FW/DW, fresh/dry weight; Tr, transpiration rate; Pn, net photosynthetic rate; Ck, control; S, salt treatment; JA, jasmonic acid.