TABLE 2.
In vitro studies on the effect of CuO-NPs on growth of maize seedling (Data are means of three replicates ±SD. Data are recorded after 21 days of germination).
| Treatment | Average shoot length (cm) | Shoot dry weight g) | Average root length (cm) | Chlorophyll index (SPAD) | Copper content in maize seedling (ppm) |
|---|---|---|---|---|---|
| Control | 18.4 ± 1.7 | 4.4 ± 1.1 | 12.8 ± 2.1 | 10.03 ± 2.11 | 0.041 ± 0.02 |
| T 1 | 24.5 ± 2.4 | 7.8 ± 2.3 | 14.8 ± 3.2 | 12.33 ± 2.65 | 0.055 ± 0.08 |
| T 2 | 28.8 ± 2.8 | 8.3 ± 1.6 | 21.6 ± 2.4 | 13.63 ± 2.49 | 0.088 ± 0.06 |
| T 3 | 32.4 ± 2.2 | 8.4 ± 2.1 | 24.1 ± 1.9 | 14.14 ± 2.43 | 0.092 ± 0.08 |
| T 4 | 34.2 ± 3.1 | 10.6 ± 1.8 | 24.8 ± 2.3 | 16.86 ± 4.5 | 0.098 ± 0.09 |
| T 5 | 29.4 ± 2.3 | 9.1 ± 1.5 | 22.7 ± 2.1 | 13.93 ± 2.8 | 0.012 ± 0.05 |
| T 6 | 21.1 ± 1.9 | 7.5 ± 1.2 | 15.1 ± 1.7 | 11.26 ± 2.3 | 0.015 ± 0.05 |