Table 1 Percentage of germination (%), size (cm), fresh and dry biomass (g) observed in the aerial part and roots of Lactuca sativa after exposure to a range concentrations of potassium dichromate (mg/L).
Potassium dichromate (mg/L) | Germination (%) | Size (cm) | Fresh Biomass (g) | Dry Biomass (g) | |||
|---|---|---|---|---|---|---|---|
Aerial part | Roots | Aerial part | Roots | Aerial part | Roots | ||
0.0 | 100.0 | 4.57 ± 0.11 | 4.04 ± 1.20 | 223.8 ± 20.8 | 17.5 ± 1.2 | 10.7 ± 1.1 | 4.03 ± 0.23 |
100.5 | 95.0 | 4.67 ± 0.10 | 4.96 ± 0.46 | 270.6 ± 15.0 | 16.9 ± 0.7 | 20.3 ± 1.5 | 4.03 ± 0.88 |
120.6 | 97.5 | 4.54 ± 0.36 | 3.67 ± 0.70 | 189.7 ± 46.0 | 14.0 ± 2.6 | 21.1 ± 5.2 | 4.23 ± 1.49 |
144.7 | 100.0 | 4.06 ± 0.07 | 4.32 ± 0.28 | 212.3 ± 12.6 | 14.9 ± 0.6 | 20.2 ± 1.4 | 5.10 ± 0.59 |
173.6 | 100.0 | 3.86 ± 0.22* | 3.01 ± 0.33 | 164.9 ± 15.1 | 11.2 ± 3.3 | 15.0 ± 1.4 | 3.57 ± 0.38 |
208.3 | 100.0 | 3.61 ± 0.21* | 2.45 ± 0.35 | 132.2 ± 21.9 | 10.3 ± 1.6 | 14.9 ± 0.9 | 3.60 ± 0.21 |
250.0 | 97.5 | 3.76 ± 0.49* | 1.74 ± 0.24* | 112.2 ± 23.1* | 12.4 ± 1.4 | 15.2 ± 3.1 | 3.57 ± 0.35 |
