Table 8.
APX activity (µMg−1FW) 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 | 18.16 ± 1.42a
(0.00) |
12.74 ± 1.13b
(0.00) |
48.21 ± 1.49a
(0.00) |
49.49 ± 1.94bc
(0.00) |
| 550 | 9.72 ± 1.09c
(46.44) |
8.14 ± 0.62c
(36.11) |
48.00 ± 0.62a
(0.44) |
47.59 ± 1.75c
(3.85) |
| 700 | 12.64 ± 1.82bc
(30.39) |
17.06 ± 1.61a
(−33.87) |
49.50 ± 1.45a
(−2.67) |
50.36 ± 0.49bc
(−1.75) |
| 850 | 16.76 ± 0.85ab
(7.70) |
10.07 ±0.50bc
(20.98) |
47.14 ± 3.34a
(2.22) |
58.76 ± 2.01a
(−18.72) |
| 1000 | 13.29 ± 2.60abc
(26.84) |
3.85 ± 0.64d
(67.32) |
47.80 ± 1.44a
(0.85) |
53.41 ± 0.92b
(−6.51) |
Values are the means ± SE of three replications. Variants possessing the same letters are not statistically significant at 5% probability level. Other pieces of information are the same as in Table 1.