Fig. 4

Seed germination and seedling development of LcMYB4-overexpression and WT Arabidopsis plants under chilling stress. a WT plants and three LcMYB4-overexpression lines were germinated on 1/2 MS medium with or without chilling stress (control and cold). b The seed germination rate of the LcMYB4-overexpression lines and WT plants under control for 7 d and 4 °C stress for 50 d. (c, d) Root development of overexpression and WT plants with or without cold stress. The primary root elongation was measured 50 d under 4 °C treatment. Experiments were performed in triplicate, and ** is indicated P < 0.01