Table 5.
Leaf mass per area (LMA) and pigments in leaves of fullmoon maple seedlings grown under different light conditions, sampled in the morning of Oct 19.
| Oct 19 | Open | Shade | ||||
|---|---|---|---|---|---|---|
| H0 | L0 | LH1 | LH2 | LH3 | F-statistics | |
| LMA (g m-2) | 62.5 ± 3.6 a | 35.4 ± 1.2 b | 37.0 ± 1.8 b | 34.4 ± 0.7 b | 39.4 ± 3.0 b | 23.4 *** (F4,17) |
| Chl a+b (µmol g-1) |
2.98 ± 0.39 b | 8.55 ± 1.06 a | 6.70 ± 0.32 ab | 6.54 ± 0.67 ab | 5.87 ± 1.17 ab | 4.63 * (F4,17) |
| Chl a:b | 2.55 ± 0.09 | 2.65 ± 0.14 | 2.21 ± 0.12 | 2.38 ± 0.12 | 2.65 ± 0.07 | 2.30 ns (F4,17) |
| (V+A+Z)/Chl (mmol mol-1) |
154.2 ± 16.9 a | 57.7 ± 9.4 b | 94.2 ± 5.1 b | 88.5 ± 11.6 b | 69.0 ± 11.9 b | 9.96 *** (F4,17) |
| (Z+A)/(V+A+Z) | 0.79 ± 0.05 a | 0.57 ± 0.06 b | 0.88 ± 0.02 a | 0.81 ± 0.03 a | 0.78 ± 0.02 a | 6.76 ** (F4,17) |
| Anthocyanin/Chl (mol mol-1) |
2.32 ± 0.65 a | 0.63 ± 0.34 b | 1.87 ± 0.10 ab | 0.91 ± 0.19 ab | 0.58 ± 0.29 b | 4.14 * (F4,17) |
Pigments analyzed were dry-mass based leaf total chlorophyll content (Chl a+b), chlorophyll a to b ratio (Chl a:b), chlorophyll-based xanthophyll cycle pigments content ((V+A+Z)/Chl), including violaxanthin (V), antheraxanthin (A), and zeaxanthin (Z), conversion state of xanthophyll cycle ((Z+A)/(V+A+Z)), chlorophyll-based anthocyanins content (anthocyanin/Chl). H0: open condition, L0: shade condition (relative irradiance of ≈ 13% of open condition) throughout the experimental period, LH1: transfer from shade to open on Oct 5, LH2: transfer from shade to open on Oct 12, and LH3: transfer from shade to open on Oct 18. Values are means ± se; n= 3 to 6. *, **, and *** denote significant effect at P ≤ 0.05, ≤ 0.01, and ≤ 0.001, respectively. ns indicates no statistically significant effect. Different letters indicate significant differences among means of light treatments on the same date at P < 0.05.