Fig. 6.

Responses of seed germination and seedling growth to treatment with NaCl and abscisic acid (ABA). (A–C) Responses to NaCl treatment: (A) germination rates: T3 generation seeds were soaked in distilled water for 1 day and then allowed to germinate on sterile-water-saturated filter paper with 100 mM NaCl for 5 days; (B) phenotypes: seeds were allowed to germinate in darkness for 2 days, and then transferred to 1/2 MS medium containing 150 mM NaCl under 28/25 °C (day/night) with a 14-h photoperiod for 12 days; (C) shoot heights of seedlings under normal and 150 mM NaCl conditions. (D–F) Responses to ABA treatment: (D) germination rates: T3 generation seeds were soaked in distilled water for 1 day and then allowed to germinate on sterile-water-saturated filter paper with 4 μM ABA for 5 days; (E) phenotypes: seeds were allowed to germinate in darkness for 2 days, and then transferred to 1/2 MS medium containing 4 μM ABA under 28/25 °C (day/night) with a 14-h photoperiod for 12 days; (F) shoot heights of seedlings under normal and 4 μM ABA conditions. Data are mean±SE of three replicates. Asterisks indicate statistically significant differences (P < 0.05) between wild-type (WT) and transgenic lines (OE and Ri). (This figure is available in colour at JXB online.)