FIGURE 1.

Effects of NaCl on the rice seed germination rate and the contents of GA₁ and GA₄ in germinating seeds. (A) Effects of NaCl and NaCl + GA₃ on the rice seed germination rate. Rice seeds were incubated in 9-cm Petri dishes with distilled water (control), 120 mM NaCl, or 120 mM NaCl + 50 μM GA₃. After 96 h of incubation, the seed germination rate was calculated from five biological replicates. (B) Effects of NaCl on GA₁ and GA₄ contents in germinating seeds. Rice seeds were incubated in 9-cm Petri dishes with distilled water (control) or 120 mM NaCl. After 96 h incubation, the GA₁ and GA₄ contents of seed embryos were detected with three biological replicates. Data are presented as means ± SE. Significant differences (P < 0.05) are indicated by different letters.