Fig. 2. Water (W), Ca, Mg, K, P, and S concentrations in developing grains of ‘Bacanora T88’, ‘Rayón F89’, and the Synthetic. Samples were from the second sowing date. G₁, G₂, G₃, G₄ indicate grain positions within the CS, G₁ is the grain position closest to the rachis. Values in parentheses indicate relative differences (%) between grain positions G₃ or G₄ (depending on genotype) and G₁ averaged across all sampling dates.