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Effect of cations on productivity of biomass and flavonoid content
| Cations (30 % increase) | Productivity (mg/L/day) | |
|---|---|---|
| Biomass (g−1) | Flavonoid | |
| Control | 1160 ± 3.1 | 2.6 ± 0.2 |
| Mg2+ | 1147 ± 2.3 | 5.8 ± 0.2 |
| Mn2+ | 1032 ± 1.4 | 7.4 ± 0.4 |
| Cu2+ | 1155 ± 1.6 | 8 ± 0.5 |
| Fe2+ | 1200 ± 1.3 | 12 ± 1.2 |
| Ca2+ | 1156 ± 0.4 | 9 ± 0.42 |
Data are the mean ± SD of three independent measurements
Significant at P < 0.01. F-ratio = 5.89**, CD(0.05) = 2.417
