Table 1.
Effect of calcium on the contents of pigments in M. baccata leaves under temperature stress.
| Temperature | Treatment | Chlorophyll a (mg·g−1 FW) | Chlorophyll b (mg·g−1 FW) | Total Chlorophyll (mg·g−1 FW) | Chlorophyll a/b (mg·g−1 FW) |
|---|---|---|---|---|---|
| 15 °C | NT | 2.262 ± 0.074 a | 0.746 ± 0.017 ab | 3.009 ± 0.063 a | 3.034 ± 0.158 a |
| 5 °C | TT | 1.359 ± 0.031 bB | 0.860 ± 0.076 aA | 2.219 ± 0.046 bA | 1.591 ± 0.169 cB |
| CT | 1.814 ± 0.077 bA | 0.440 ± 0.083 bB | 2.253 ± 0.160 bA | 4.215 ± 0.695 aA | |
| 20 °C | TT | 2.113 ± 0.101 aA | 0.690 ± 0.015 bA | 2.803 ± 0.115 aA | 3.060 ± 0.090 aA |
| CT | 2.196 ± 0.040 aA | 0.716 ± 0.200 aA | 2.912 ± 0.192 aA | 3.232 ± 0.884 abA | |
| 0 °C | TT | 1.162 ± 0.348 bA | 0.438 ± 0.099 cA | 1.600 ± 0.447 cA | 2.622 ± 0.225 bA |
| CT | 1.412 ± 0.197 cA | 0.503 ± 0.068 abA | 1.915 ± 0.264 bA | 2.806 ± 0.011 bA |
Note: The data in Table 1 are means ± SE (n = 3). Lowercase letters indicate significant difference at p < 0.05 (Duncan’s test) of different treatments at the same temperature. Capital letters indicate significant difference at p < 0.05 (Duncan’s test) of the same treatment at different temperature. TT, temperature treatment; CT, calcium treatment; NT, control; and FW, fresh weight.