Table 4.
Effect of different level of PEG-6000 induced osmotic stress on root and shoot dry weight (mg) of wheat genotypes.
| Osmotic Stress | Root Dry Weight (mg) |
Shoot Dry Weight (mg) |
Root-Shoot Ratio |
|||
|---|---|---|---|---|---|---|
| Chakwal-50 | Wafaq-2001 | Chakwal-50 | Wafaq-2001 | Chakwal-50 | Wafaq-2001 | |
| Control | 188 ± 1.28 a | 131 ± 1.47c | 328 ± 3.04 a | 282 ± 2.16b | 0.574 ± 0.006c | 0.465 ± 0.007 d |
| −2 Bars | 161 ± 1.29b (14.4%) | 136 ± 1.29c (-3.8%) | 288 ± 2.11b (12.2%) | 203 ± 1.24 d (28.0%) | 0.560 ± 0.005c | 0.671 ± 0.010b |
| −4 Bars | 138 ± 0.98c (26.6%) | 116 ± 1.29 d (11.5%) | 239 ± 2.15c (27.1%) | 163 ± 2.04 e (42.2%) | 0.578 ± 0.005c | 0.713 ± 0.010b |
| −6 Bars | 113 ± 1.17 d (39.9%) | 93 ± 1.14 e (29.0%) | 202 ± 2.15 d (38.4%) | 104 ± 2.10f (63.1%) | 0.560 ± 0.006c | 0.901 ± 0.029 a |
| −8 Bars | 90 ± 1.24 e (52.1%) | 28 ± 0.65f (78.6%) | 171 ± 2.12 e (47.9%) | 83 ± 2.16 g (70.6%) | 0.527 ± 0.008 cd | 0.340 ± 0.013 e |
| LSD | Interaction (T × V) : 7.17 | Interaction (T × V) : 12.72 | Interaction (T × V) : 0.072 | |||
The values represent the averages (±SE) of four independent replicates followed by different letters within columns are significantly different at P ≤ 0.05, according to Duncan’s Multiple Range test. The data in parentheses indicate percent decrease in root dry weight, shoot dry weight and root-shoot ratio of wheat genotypes in comparison to their control values.