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

Table 1

Effects of copper (Cu) and chromium (Cr) on chlorophyll (mg g⁻¹ FW) and total soluble protein (TSP) content (mg g⁻¹ FW) in two Brassica napus cultivars under different metal treatments.

Cultivar	Treatment	Chl a	Chl b	Total Chl	Leaf TSP	Root TSP
ZS 758	CK	0.343 ± 0.017	0.282 ± 0.015	0.625 ± 0.002	15.78 ± 0.46	6.64 ± 0.47
	Cu 200 μM	0.250 ± 0.018	0.190 ± 0.020	0.441 ± 0.037	13.20 ± 0.08	4.84 ± 0.04
	Cr 200 μM	0.191 ± 0.020	0.141 ± 0.011	0.332 ± 0.009	11.28 ± 0.49	3.77 ± 0.46
	Cu 200 μM + Cr 200 μM	0.131 ± 0.008	0.091 ± 0.006	0.221 ± 0.014	9.63 ± 0.18	3.23 ± 0.21
ZD 622	CK	0.337 ± 0.024	0.293 ± 0.029	0.630 ± 0.052	16.65 ± 0.54	6.58 ± 0.23
	Cu 200 μM	0.206 ± 0.025	0.152 ± 0.017	0.358 ± 0.042	13.02 ± 0.88	4.93 ± 0.27
	Cr 200 μM	0.150 ± 0.009	0.080 ± 0.009	0.230 ± 0.018	10.47 ± 0.34	3.77 ± 0.14
	Cu 200 μM + Cr 200 μM	0.081 ± 0.006	0.034 ± 0.003	0.115 ± 0.009	8.35 ± 0.33	2.52 ± 0.27

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.