In Vitro Cadmium-Induced Alterations in Growth and Oxidative Metabolism of Upland Cotton (Gossypium hirsutum L.)
Table 2
Percent tolerance index of cotton callus culture (cv. YZ1) grown under various levels of cadmium.
Cd treatment (µM)
Stress periods
7 days
14 days
21 days
28 days
0
100.00 ± 0.00a (0.00)
100.00 ± 0.00a (0.00)
100.00 ± 0.00a (0.00)
100.00 ± 0.00b (0.00)
550
107.97 ± 9.25a (−7.97)
102.64 ± 18.08a (−2.65)
122.19 ± 13.13a (−22.19)
106.93 ± 18.69ab (−6.93)
700
133.41 ± 8.69a (−33.41)
92.17 ± 23.62a (7.83)
106.73 ± 11.22a (−6.73)
105.5 ± 6.26ab (−5.50)
850
150.35 ± 32.02a (−50.35)
87.07 ± 18.87ab (12.93)
102.63 ± 19.94a (−2.63)
131.41 ± 8.62ab (−31.41)
1000
91.79 ± 29.21a (8.21)
38.40 ± 3.97b (61.60)
90.45 ± 9.46a (9.55)
90.00 ± 4.69b (10.00)
Values are the means ± SE of three replications. Variants possessing same letters are not statistically significant at 5% probability level. Other pieces of information are the same as in Table 1.