Cadmium-Induced Upregulation of Lipid Peroxidation and Reactive Oxygen Species Caused Physiological, Biochemical, and Ultrastructural Changes in Upland Cotton Seedlings

Table 1

Tolerance indices/plant based on biomass (fresh and dry) and water content (%)/plant of different parts of cotton seedlings grown under Cd stress.

Parts	Tolerance index (FW)		Tolerance index (DW)		Water contents (%)
	0 µM Cd	500 µM Cd	0 µM Cd	500 µM Cd	0 µM Cd	500 µM Cd
Roots	100.00 ± 0.00^a; (0.00)	62.86 ± 2.44^b; (−37.14)	100.00 ± 0.00^a; (0.00)	26.11 ± 3.89^b; (−73.89)	92.47 ± 0.29^b; (0.00)	96.78 ± 0.73^a; (4.67)
Stems	100.00 ± 0.00^a; (0.00)	74.58 ± 6.73^b; (−25.42)	100.00 ± 0.00^a; (0.00)	65.00 ± 5.00^b; (−35.00)	91.10 ± 0.22^b; (0.00)	92.22 ± 0.29^a; (1.23)
Leaves	100.00 ± 0.00^a; (0.00)	99.33 ± 9.66^a; (−0.97)	100.00 ± 0.00^a; (0.00)	85.39 ± 2.56^b; (−14.61)	90.22 ± 0.85^a; (0.00)	91.50 ± 0.64^a; (1.42)

Values are the means ± SE of three replications. Variants possessing the same letter are not statistically significant at P < 0.05. Values in parenthesis show percent relative increase (+) or decrease (−) over the related controls.