Fig. 2

Physiological responses in DT and DS under drought stress. A Total antioxidant capacity; B Flavonoid contents; C Soluble sugar contents; D Proline contents. Different letters indicate significant differences at the p < 0.05 level between different points for each genotype, * (p < 0.05) and ** (p < 0.01) indicate significant differences between two genotypes at the same treatment point