Figure 2.

Iron nutritional status of rice plants grown in nutrient solution as affected by silicic acid supply (+Si: 30 mg L⁻¹, −Si: 3 mg L⁻¹) and Fe supply (Fe^EDDHA) (A) phenotypic differences between rice plants grown in low Fe conditions (0.2 mg L⁻¹) and chlorophyll concentration of leaves shown as SPAD value of plants grown with low Fe (0.2 mg L⁻¹), optimal Fe (2 mg L⁻¹) and high Fe (10 mg L⁻¹). (B) Iron concentrations in the shoot dry matter (DM). Ruled bars represent the +Si plants; white bars represent plants grown with −Si. Bars indicate the SE. Different letters indicate significant differences between treatments; Bonferroni test with p < 0.05.