Reduction rate of leaf weight
Data in Table 2 represented the reduction rate in leaf weight (g.day-1) as affected by anti-transpiration agents. In both seasons, anti-transpiration treatments decrease significantly the reduction rate of leaf weight comparing with the control. Glycerol treatment at concentration 2 or 4% had the lowest value of leaf weight reduction rate which obviously reflected on leaf vase life. Total pigments
It is obvious from Table 3 that, the total chlorophyll percentage after 6 days was higher with any concentrations of the used antitranspiration agents than control. The highest values of total chlorophyll were with MgCO3 at 4 and 2% among all other treatments. The nearest highest value to that after 2 days was with 2% glycerol. While the total carotenoids was the highest with the three concentrations of glycerol (2, 6 and 8%) and with MgCO3 at 6 and 8% after 2 days. Contrary, after 6 days, most of the concentrations of the used antitranspiration do not influence the total carotenoids expect the minute increase with 2% Na2 CO3 and 8% glycerol that the pigments concentrations were decreased after 6 days in all treatments