Fig. 1
From: Biochemical metabolism of young plants of Ucuúba (Virola surinamensis) in the presence of cadmium
a Nitrate concentration in the root, b nitrate concentration in the leaves, c nitrate reductase concentration in the root, d nitrate reductase concentration in the leaves, e ammonium concentration in the root, f ammonium concentration in the leaves in young plants of V. surinamensis exposed to five cadmium concentrations (0, 15, 30, 45, and 60 mg). Different letters for cadmium concentrations in solution indicate significant differences in the Tukey’s test (P < 0.05). Mean ± SD, n = 7