Figure 1.

The physiological indexes of L. multiflorum were measured after drought treatments. Leaf transpiration rate (A) and leaf water potential (B) in drought-resistant and drought-susceptible plants after 0, 1, and 2 h of treatment (A,B). Malondialdehvde content (C) and H₂O₂ concentration (D) of 20-day-old annual ryegrass lines with drought stress for 0, 1, and 2 h (C,D). The enzymatic activities of catalases (E), superoxide dismutase (F), dehydroascorbate reductase (G), and monodehydroasorbate reductase (H) of two L. multiflorum lines after different drought treatments (E–G). Bars with different letters above the columns of figures indicate significant differences (P < 0.05) between different time points.