Fig. 1

Biomass dry weight (a-c) and distribution (d-f) in leaf (a, d), stem (b, e), and root (c, f) organs of citrus seedlings grown under conditions of Mg deficiency (-Mg) and sufficiency (+ Mg). Leaf and stem biomasses were divided into the branch, upper and lower parts. Root biomass was divided into the main and lateral parts. Data are presented as mean ± standard deviation (n = 5). Different letters represent significant differences between the Mg treatment groups at P < 0.05