Table 1.
Water stress conditions (%) | Fresh weight (g) (mean ± SE) | Dry weight (g) (mean ± SE) | Length (cm) (mean ± SE) | Chlorophyll content (mg g−1 fresh weight) (mean ± SE) | |||||
---|---|---|---|---|---|---|---|---|---|
Shoot | Root | Shoot | Root | Shoot | Root | Chl a | Chl b | Total Chl a + b | |
Control | 9.37 ± 0.5d | 3.98 ± 0.6d | 1.61 ± 0.5d | 0.69 ± 0.5d | 35.1 ± 0.8d | 20.7 ± 0.7d | 5.1 ± 0.7d | 2.1 ± 0.2c | 7.2 ± 0.9d |
25 | 6.63 ± 0.3c | 2.03 ± 1.0c | 1.07 ± 0.5c | 0.51 ± 0.2c | 27.8 ± 0.4c | 16.9 ± 0.6c | 3.1 ± 0.2c | 1.1 ± 0.9b | 4.2 ± 0.3c |
50 | 4.03 ± 0.9b | 1.19 ± 0.6b | 0.75 ± 0.4b | 0.38 ± 0.3b | 22.9 ± 0.7b | 12.8 ± 0.8b | 2.2 ± 0.1b | 0.1 ± 0.1b | 2.3 ± 0.2b |
75 | 1.66 ± 0.8a | 0.68 ± 0.6a | 0.4 ± 0.5a | 0.2 ± 0.4a | 18.7 ± 0.4a | 9.7 ± 0.6a | 1.3 ± 0.2a | 0.5 ± 0.2a | 1.8 ± 0.2a |
Control + SPM | 9.41 ± 0.3d | 4.02 ± 0.6d | 1.67 ± 0.9d | 0.7 ± 0.2d | 36.4 ± 0.9d | 21.8 ± 0.7d | 5.6 ± 0.3d | 2.4 ± 0.4c | 8.0 ± 0.7d |
25 + SPM | 7.87 ± 0.8c | 2.84 ± 1.3c | 1.31 ± 0.6c | 0.6 ± 0.2c | 31.9 ± 0.7c | 18.4 ± 0.7c | 3.8 ± 0.1c | 1.6 ± 0.1b | 5.4 ± 0.2c |
50 + SPM | 6.08 ± 1.0b | 1.95 ± 0.5b | 0.87 ± 0.3b | 0.48 ± 0.3b | 26.3 ± 0.9b | 15.8 ± 0.8b | 2.8 ± 0.2b | 1.2 ± 0.1a | 4.0 ± 0.3b |
75 + SPM | 3.44 ± 0.8a | 1.09 ± 0.6a | 0.55 ± 0.3a | 0.32 ± 0.7a | 24.0 ± 1.0a | 12.6 ± 0.8a | 1.9 ± 0.1a | 0.9 ± 0.2a | 2.8 ± 0.3a |
Measurements were made 3 weeks after water deficit along with spermidine sprays. Data are given as the mean ± SE of three independent experiments. Means followed the same column that have the same letter are significantly different at p ≤ 0.05 based on Duncan’s multiple range test
SPM Spermidine