FIGURE 5.

Drought resistance analysis of T1 transgenic and WT tobacco seedlings. Four-week-old seedlings of transgenic lines and WT were not watered for 0, 10, and 21 days, and were then re-watered (A); the survival rates of transgenic and WT seedlings after re-watering (B); the proline content (C), and soluble sugar content (D) were analyzed in transgenic and WT plants after exposure to drought for 10 and 14 days, respectively. Six seedlings of each transgenic line and WT were planted in each small basin for the drought treatment and corresponding analysis; 18 plants were used in each experiment. ^∗, ^∗∗, and ^∗∗∗ indicate statistically significant differences at P < 0.05, P < 0.01, and P < 0.001 (Student’s t-test), respectively.