Elevated CO2 increases water use efficiency by sustaining photosynthesis of water-limited maize and sorghum.

Abstract

Maize and grain sorghum seeds were sown in pots and grown for 39 days in sunlit controlled-environment chambers at 360 (ambient) and 720 (double-ambient, elevated)μmol mol(-1) carbon dioxide concentrations [CO(2)]. Canopy net photosynthesis (PS) and evapotranspiration (TR) was measured throughout and summarized daily from 08:00 to 17:00h Eastern Standard… (More)
DOI: 10.1016/j.jplph.2011.05.005

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