M.Sc. Tezi Görüntüleme

      In this study effects of brassinosteroid (24-epibarssinolid) hormone, which was sprayed to leaves of Ctenanthe setosa and which was prepared in two different concentrations, on leaf rolling which started after exposure of plants to drought stress, was observed. In addition, reasons of this effect taking place during leaf rolling were investigated in biochemical level for this reason throughout of drought period. Changes in leaf rolling of plant were determined morphologically, however, proline, reducing sugar, total soluble sugar quantities, in the day of the drought had the maximum value, were measured spectrophotometrically. Total nitrogen and total protein content were calculated by the method of Kjeldahl.

      Biochemical test results showed that 0,01 ppm EBL increased the prolin content, while 0,05 ppm did not effect in comparison with control (drought). However, it was observed that brassinolides caused an increase in quantities of reducing sugar, total soluble sugar, total nitrogen and total protein in comparison with control ones. It was recorded that 0,05 ppm EBL increased reducing sugar content more than that of 0,01 ppm EBL. In spite of that it was found that difference between degrees increasing in content of soluble sugar, total nitrogen and total protein which were resulted from 0,01 and 0,05 ppm EBL was not statistically significant.

      Keywords: Ctenanthe setosa, Drougt Stress, Leaf Rolling, Brassinosteroid, Proline, Reducing Sugar, Total Soluble Sugar, Total Nitrogen, Total Protein