Time course of changes in the root morphological parameters and growth of pak choi seedlings exposed to exogenous Gly.

Eighteen-day-old pak choi seedlings were transferred to hydroponic nutrient solution containing 10 mM NaNO3 with or without 2.5 mM Gly. (A) Primary root length, (B) total root length, (C) number of root tips, (D) number of roots per root length, (E) root surface area, (F) root activity, (G) root fresh weight and (H) shoot fresh weight of pak choi seedlings at various time points. Data are mean ± SE (n = 9). Different letters indicate significant differences between treatments at P t-test.