Table 2.
Effects of photoperiods and light qualities on chlorophyll content of C. lanceolata in vitro culture plantlets
| Photoperiod/ h·d− 1 (A) | Light qualitya (B) | Chlorophyll a content/mg·g− 1 FW | Chlorophyll b content/mg·g− 1 FW | Total chlorophyll content/mg·g− 1 FW | Chlorophyll a/b |
|---|---|---|---|---|---|
| 8 | R/B | 1.02 ± 0.07b dc | 0.63 ± 0.04 d | 1.65 ± 0.12 d | 1.64 ± 0.01 d |
| R/B/P | 0.56 ± 0.03 f | 0.40 ± 0.01 f | 0.96 ± 0.04 g | 1.41 ± 0.03 e | |
| R/B/P/G | 1.43 ± 0.10 a | 0.79 ± 0.04 a | 2.22 ± 0.14 a | 1.81 ± 0.04 ab | |
| W | 0.64 ± 0.02 f | 0.47 ± 0.01 e | 1.11 ± 0.03 f | 1.37 ± 0.01 e | |
| 16 | R/B | 1.30 ± 0.01 b | 0.69 ± 0.05 bc | 1.99 ± 0.04 b | 1.87 ± 0.13 a |
| R/B/P | 1.17 ± 0.06 c | 0.66 ± 0.03 cd | 1.83 ± 0.08 c | 1.77 ± 0.03 bc | |
| R/B/P/G | 1.35 ± 0.07 ab | 0.72 ± 0.02 cd | 2.08 ± 0.09 b | 1.86 ± 0.07 ab | |
| W | 1.13 ± 0.04 c | 0.64 ± 0.01 d | 1.77 ± 0.05 cd | 1.77 ± 0.02 bc | |
| 24 | R/B | 0.84 ± 0.07 e | 0.50 ± 0.03 e | 1.33 ± 0.10 e | 1.69 ± 0.04 cd |
| R/B/P | 0.32 ± 0.01 g | 0.22 ± 0.01 h | 0.54 ± 0.01 h | 1.43 ± 0.09 e | |
| R/B/P/G | 0.29 ± 0.02 g | 0.26 ± 0.01 g | 0.55 ± 0.03 h | 1.14 ± 0.03 f | |
| W | 0.34 ± 0.02 g | 0.28 ± 0.01 g | 0.62 ± 0.03 h | 1.20 ± 0.04 f | |
| F-test | A | ** | ** | ** | ** |
| B | ** | ** | ** | ** | |
| A × B | ** | ** | ** | ** |
a The light qualities are R/B (88.9% red+ 11.1% blue), R/B/P (80.0% red+ 10.0% blue+ 10.0% purple), R/B/P/G (72.7% red+ 9.1% blue+ 9.1% purple+ 9.1% green), W (12.7% red+ 3.9% blue+ 83.4% green)
b mean ± standard deviation, n = 3
c Any two means within a column not followed by the same letter are significantly different at P < 0.05 by ANOVA on Duncan’s multiple range test
** mean significant at P < 0.01