Ecotoxicological and Interactive Effects of Copper and Chromium on Physiochemical, Ultrastructural, and Molecular Profiling in Brassica napus L.

Table 3

Effects of copper (Cu) and chromium (Cr) on MDA (nmol g⁻¹ FW), hydrogen peroxide (H₂O₂) (μmol g⁻¹ FW), superoxide radical () (nmol min⁻¹ g⁻¹ FW), and hydroxyl radical (μmol g⁻¹ FW) in the roots of two Brassica napus cultivars under different metal treatments.

Cultivar	Treatment	Root MDA	Root	Root H2O2	Root
ZS 758		1.45 ± 0.14	1.46 ± 0.07	1.14 ± 0.07	0.524 ± 0.0410
	Cu 200 μM	22.53 ± 1.17	27.45 ± 1.07	24.12 ± 2.23	1.043 ± 0.1031
	Cr 200 μM	34.65 ± 0.83	40.27 ± 2.20	44.17 ± 1.85	1.487 ± 0.0225
	Cu 200 μM + Cr 200 μM	45.78 ± 1.16	52.54 ± 1.58	62.94 ± 2.66	1.782 ± 0.0517
ZD 622		1.48 ± 0.13	1.48 ± 0.08	1.06 ± 0.06	0.543 ± 0.0270
	Cu 200 μM	36.60 ± 1.46	39.73 ± 1.09	35.69 ± 2.34	1.348 ± 0.0240
	Cr 200 μM	53.07 ± 1.23	56.97 ± 3.61	69.72 ± 2.08	1.943 ± 0.1009
	Cu 200 μM + Cr 200 μM	72.72 ± 2.12	73.68 ± 2.57	92.82 ± 3.39	2.665 ± 0.0705

Data are the means of three replicates (mean ± SD). Values followed by different letters indicate significant differences followed by Duncan’s multiple range test ( < 0.05) for each cultivar at different metal treatments.