Fig. 1

A The number of leaves per plant, B subtending leaf area (cm⁻²), C subtending leaf biomass (g), and D N content in the subtending leaf (%) of CCRI-69 and XLZ-30 in under control (2.5 mmol·L⁻¹), and high (5 mmol·L⁻¹) N conditions at 10, 25 and 40 days post-anthesis (DPA). Error bars with different small letters show a significant difference between genotypes under control and high N condition and capital letters in the brackets show significant difference among growth stages (10, 25, and 40 DPA) at P < 0.05