Simulation of the effects of genotype and N availability on rice growth and yield response to an elevated atmospheric CO2 concentration

► Model predicted positive N fertilizer effect on rice yield response to enriched CO2. ► Rice genotype with a larger number of spikelets showed a larger yield response to enriched CO2. ► Sink-source balance was a key factor for both genotypic and N-availability effects on rice yield response to enriched CO2.