A wheat growth model that includes the direct responses of canopy photosynthesis and transpiration to elevated CO2, and the response of crop growth to water stress has been developed and tested. Sensitivity analyses show that different cultivars have quite different responses to changes in ambient air temperature, ambient CO2 concentration and rainfall. Because crops reach maturity earlier under higher temperature, an increase of 3 oC may not impose further water stress to growth of a wheat crop. Climate change, which is simple terms refers to the rise in mean minimum and maximum temperature, elevation in CO2 and other green house gases, coupled with less/more or elastic rainfall patterns is a matter of greater concern for the agrarian ecologies. | Effect of climate change on wheat based cropping system in India A review
