Fig. 2.
Impact of copper nanoparticles on onion (a) plant height, (b) leaf length, (c) root fresh weight, (d) root dry weight, (e) bulb fresh weight, (f) bulb dry weight, (g) leaf fresh weight, (h) leaf dry weight, (i) leaf area, (j) number of leaves per plant, under chromium stress. Treatments are presented as, N0 = without Cu NPs, N1 = 10 mg kg−1 Cu NPs, N2 = 15 mg kg−1 Cu NPs, with normal soil (NS) and with metal Cr (10 mg kg.−1) contaminated soil (MCS). Results are represented as means of 3 replications. Means sharing same letter donot vary significantly at p < 0.05