Table 1.
Method of PAs application | Group | Shoot length (cm) | Leaf area (cm2) | Relative growth rate |
---|---|---|---|---|
Seed priming | Control | 31.56 ± 0.51a | 7.96 ± 0.05a | 0.10 ± 0.00a |
Drought (Dr) | 24.23 ± 0.37b | 6.81 ± 0.33a | 0.05 ± 0.00c | |
Dr + Put | 26.56 ± 0.91b | 6.53 ± 0.13a | 0.06 ± 0.00bc | |
Dr + Spm | 25.96 ± 0.93b | 6.59 ± 0.43a | 0.07 ± 0.00bc | |
Dr + Mix | 27.53 ± 0.23b | 6.09± 0.79a | 0.08 ± 0.00ab | |
Foliar spray | Control | 35.10 ± 1.00a | 8.02 ± 0.96a | 0.11 ± 0.00a |
Drought (Dr) | 24.56 ± 0.20b | 7.43 ± 1.02a | 0.06 ± 0.01b | |
Dr + Put | 36.86 ± 1.03a† | 7.99 ± 1.01a | 0.08 ± 0.02ab | |
Dr + Spm | 37.40 ± 0.18a† | 8.78 ± 0.37a† | 0.10 ± 0.00a† | |
Dr + Mix | 38.06 ± 0.90a† | 9.05 ± 0.18a† | 0.10 ± 0.01a | |
LSD interaction at P < 0.05 | 2.80 | 1.92 | 0.03 |
Put = Putrescine, Spm = Spermine and Mix = Put + Spm. Values represent means (± SE) and different letters indicate significant differences between samples in each group according to analysis of variance (two-way ANOVA) statistical analysis with three different replicates (LSD = Least Significant Difference, P < 0.05)
†Indicates significant differences between samples with the same treatment but in different groups (with a different method of PAs application)