Fig. 3

Net photosynthetic rate of different genotypes of Brassica napus at the following conditions A PAR:1500 μmol m⁻² s⁻¹, CO₂: 300 μmol mol⁻¹ B PAR: 1000 μmol m⁻² s⁻¹, CO₂: 300 μmol mol⁻¹ C PAR: 1500 μmol m⁻² s⁻¹, CO₂: 500–600 μmol mol⁻¹. Data shown are the means ± SE from three experimental replicates (n = 14, five plants per one experimental replicate). Different letters denote significant differences from multiple comparison test (P < 0.05) conducted for each measure condition