Table 2.
Effects of 1-MCP on chlorophyll contents (Chl a, b, carotenoids, and total chl contents) in 2017.
| Chlorophyll a | Chlorophyll b | Carotenoid | Total chlorophyll | |||
|---|---|---|---|---|---|---|
| Cultivars | Salt levels | PGR | mg g-1 Fw | mg g-1 Fw | mg g-1 Fw | mg g-1 Fw |
| LYP9 | CK | 1-MCP | 2.8 ± 0.1ab | 0.6 ± 0.03a | 0.8 ± 0.01ab | 4.2 ± 0.01a |
| CT | 2.6 ± 0.1b | 0.5 ± 0.02ab | 0.7 ± 0.03ab | 3.8 ± 0.01ab | ||
| LS | 1-MCP | 2.8 ± 0.2ab | 0.6 ± 0.1a | 0.8 ± 0.1a | 4.2 ± 0.01a | |
| CT | 2.4 ± 0.1c | 0.5 ± 0.03b | 0.7 ± 0.04ab | 3.5 ± 0.01b | ||
| MS | 1-MCP | 3.0 ± 0.1a | 0.6 ± 0.02a | 0.7 ± 0.1ab | 4.3 ± 0.01a | |
| CT | 2.3 ± 0.2c | 0.5 ± 0.04b | 0.6 ± 0.03b | 3.4 ± 0.01b | ||
| F Value | 1-MCP | 22.9∗∗∗ | 17.16∗∗∗ | 7.25∗∗ | 22.9∗∗∗ | |
| Salt Stress | 0.54 ns | 0.47 ns | 0.82 ns | 0.51 ns | ||
| Interaction | 1.6 ns | 0.86 ns | 0.46 ns | 1.44 ns | ||
| NPBA | CK | 1-MCP | 3.3 ± 0.1a | 0.6 ± 0.04bc | 0.9 ± 0.03a | 4.7 ± 0.1a |
| CT | 2.97 ± 0.05b | 0.5 ± 0.03bc | 0.6 ± 0.04b | 4.1 ± 0.1b | ||
| LS | 1-MCP | 2.69 ± 0.1bc | 0.6 ± 0.02b | 0.7 ± 0.02b | 3.9 ± 0.1b | |
| CT | 2.28 ± 0.05de | 0.5 ± 0.02bc | 0.6 ± 0.05b | 3.4 ± 0.05c | ||
| MS | 1-MCP | 2.51 ± 0.1cd | 0.7 ± 0.02a | 0.7 ± 0.01b | 3.86 ± 0.2b | |
| CT | 2.16 ± 0.2e | 0.5 ± 0.04c | 0.6 ± 0.1b | 3.23 ± 0.2c | ||
| F Value | 1-MCP | 17.5∗∗∗ | 15.78∗∗∗ | 8.8∗∗∗ | 25.65∗∗∗ | |
| Salt Stress | 3.8∗ | 0.87 ns | 3.9∗ | 3.5∗ | ||
| Interaction | 28.16∗∗∗ | 5.6∗∗∗ | 2.9 ns | 17.3∗∗∗ | ||
The treatments are controlled (CK), low salt stress (LS), and medium salt stress (MS). LYP9, Liangyoupeijiu; NPBA, Nipponbare. P-values of the two-way ANOVAs of 1-MCP, salt stress, and their interaction are indicated: ns, not significant; ∗P < 0.05; ∗∗P < 0.01; ∗∗∗P < 0.001. Bars with the same letter are not significantly different in the LSD test and n = 6.