Table 4.
Effect of Sb on the chlorophyll a and b and total chlorophyll contents (µg g−1 FW), chlorophyll a/b ratio, total carotenoids (Car) (µg g−1 FW), carotenoid/chlorophyll ratio, and photosynthetic efficiency (Fv/Fm) in D. viscosa leaves. The data are from 10 independent experiments, each carried out in triplicate (different letters indicate significant differences at p < 0.05, Mann–Whitney U-test).
| Treatments | Chl a (μg g−1 FW) |
Chl b (μg g−1FW) |
Chl a+b (μg g−1 FW) |
Chl a/chl b | Carotenoids (μg g−1 FW) |
Carotenoids/Total chl | Fv/Fm |
|---|---|---|---|---|---|---|---|
| Control | 1773.5 ± 42.6a | 838.7 ±46.4a | 2617.8a | 2.11c | 145.9 ± 7.1b | 0.056c | 0.789 ± 0.018a |
| 0.5 mM Sb | 1512.8 ±57.2b | 672.1 ± 34.5b | 2188.3b | 2.26b | 157.5 ± 6.3a | 0.072b | 0.783 ± 0.026a |
| 1.0 mM Sb | 1144.0 ± 34.1c | 488.2 ± 28.6c | 1630.8c | 2.35a | 155.1 ± 7.4a | 0.094a | 0.713 ± 0.031b |