Soil salinity effects on transpiration and net photosynthetic rates, stomatal conductance and Na+ and Cl- contents in durum wheat
1996
Sharma, S.K. (Central Soil Salinity Research Inst., Karnal (India). Div. of Crop Improvement)
Leaf gas exchange, plant growth and leaf ion content were measured in wheat (Triticum durum cv. HD 4502) exposed to steady-state salinities (1.6, 12.0 and 16.0 dS m-1) for 8 weeks. Salinity reduced leaf area and number of tillers, and increased Na+ and Cl- concentrations in leaves. The oldest leaf contained 6 to 8 times more Na+ and Cl- than the flag leaf. Net photosynthetic rate, transpiration rate and stomatal conductance were the highest in flag leaf, in the middle and fully expanded leaves, and were minimum in the oldest leaves.
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