Effect of Elevated CO2 and Moisture Stress on the Carbon and Nitrogen Contents in Brassica Juncea

The responses of Brassica juncea cv. Pusa Bold to elevated CO₂ was studied under water stress. Carbon accumulation in leaves, stem and roots was significantly higher at elevated CO₂ concentration. The water stress decreased the carbon content in these plant parts and this adverse effect was reduced by CO₂ enrichment. On the contrary nitrogen content of leaves, stem and roots was significantly reduced at elevated CO₂. Water stress caused reduction in nitrogen content in these plant parts, similar at ambient as well as elevated CO₂ concentration. This revised version was published online in July 2006 with corrections to the Cover Date.