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Variation in the diethyl phthalate (DEP) concentration and its impact on the germination and development of Lactuca sativa roots, expressed as relative germination (RG), relative growth index (RGI) and germination index (GI).
| DEP Concentrations (mg L−1) | RG | RGI | GI |
|---|---|---|---|
| 330 | 0.93 | 0.33 | 30.66 |
| 260 | 1.00 | 0.41 | 41.40 |
| 200 | 1.00 | 0.49 | 51.14 |
| 132 | 1.00 | 0.57 | 59.23 |
| 66 | 1.00 | 0.65 | 64.76 |
| NC | 0.93 | 0.91 | 85.65 |
| PC | 0.90 | 1.0 | 90 |
*NC = negative control (ZnSO4 - 40 mg L−1); PC = positive control (water).
