Photosynthetica 1998, 35(4):597-602 | DOI: 10.1023/A:1006991210089

Effects of Elevated CO2 and Moisture Stress on Brassica Juncea

B.K. Rabha1, D.C. Uprety1
1 Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, India

The interactive effect of elevated CO2 (EC) and moisture stress (MS) on Brassica juncea cv. Pusa Bold was studied using open-top chambers. The EC markedly increased net photosynthetic rate and internal CO2 concentration and reduced variable and maximal chlorophyll fluorescence. Under MS, EC increased water potential and relative water content, and reduced transpiration rate. The greater allocation of biomass to the roots, which serve as a strong sink for assimilated carbon under EC, helped in better root growth.

Additional key words: chlorophyll fluorescence; dry mass; leaf area; leaf water potential; open-top chamber; relative water content; seed mass and yield; stomatal conductance; transpiration; water potential

Prepublished online: December 1, 1998; Published: January 1, 1998  Show citation

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Rabha, B.K., & Uprety, D.C. (1998). Effects of Elevated CO2 and Moisture Stress on Brassica Juncea. Photosynthetica, 35(4), 597-602. doi: 10.1023/A:1006991210089
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