Table 3.
Effect of different level of PEG-6000 induced osmotic stress on root, shoot and coleoptile length (cm) of wheat genotypes.
| Osmotic Stress | Root Length (cm) |
Shoot Length (cm) |
Coleoptile Length (cm) |
|||
|---|---|---|---|---|---|---|
| Chakwal-50 | Wafaq-2001 | Chakwal-50 | Wafaq-2001 | Chakwal-50 | Wafaq-2001 | |
| Control | 14.1 ± 0.05 a | 11.4 ± 0.05b | 12.5 ± 0.05 a | 9.7 ± 0.07b | 4.9 ± 0.04 a | 3.8 ± 0.03c |
| −2 Bars | 11.7 ± 0.13b (17%) | 8.9 ± 0.05 d (21.9%) | 9.1 ± 0.07c (27.2%) | 8.3 ± 0.07 d (14.4%) | 4.4 ± 0.04b (9.8%) | 3.5 ± 0.04 d (7.9%) |
| −4 Bars | 9.8 ± 0.15c (30.5%) | 7 ± 0.05 e (38.6%) | 7.5 ± 0.05 e (40%) | 6.2 ± 0.05f (36.1%) | 3.8 ± 0.04c (22.1%) | 2.6 ± 0.02f (31.6%) |
| −6 Bars | 7.3 ± 0.07 e (48.2%) | 5 ± 0.05f (56.1%) | 6.2 ± 0.07f (50.4%) | 4.1 ± 0.05 g (57.7%) | 2.9 ± 0.04 e (41%) | 1.5 ± 0.05 h(60.5%) |
| −8 Bars | 5.1 ± 0.07f (63.8%) | 3.2 ± 0.07 g (71.9%) | 3.9 ± 0.06 g (68.8%) | 2.1 ± 0.06 h (78.4%) | 2 ± 0.04 g (59.4%) | 0.9 ± 0.04 I (76.3%) |
| LSD | Interaction (T × V) : 0.46 | Interaction (T × V) : 0.35 | Interaction (T × V) : 0.21 | |||
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 length, shoot length and coleoptile length of wheat genotypes in comparison to their control values.