Fig. 5From: Implication of quantifying nitrate utilization and CO2 assimilation of Brassica napus plantlets in vitro under variable ammonium/nitrate ratiosThe contribution of nitrate (a) and ammonium utilization (b) to total inorganic nitrogen assimilation in the Brassica napus plantlets cultured under nitrate treatment. Note: Each nitrate treatment contained 20Â mM ammonium. The error bars were calculated by the error propagation formulaBack to article page