الفهرس | Only 14 pages are availabe for public view |
Abstract This study aimed to investigate the response of Taxodium distichum and Swietenia mahagoni seedlings to soil application of three concentrations of sulfur (3, 6, and 9 g /pot), foliar application both of monopotassium phosphate (KH2PO4) at (1, 2, and 3 g/L) and foliar application of putrescine at (100, 200, and 300 mg/L), that irrigation by saline water at levels of 3.13, 4.69, and 6.25 dS m-1 for T. distichum and 4.69, 6.25 and 9.38 dS m-1 for S. mahagoni, in addition to control treatment (0.35 dS m-1). Survival percentage was 100 % both of T. distichum at salinity level of 3.13 dS m-1 and S. mahagoni at salinity level of 4.69 dS m-1. As salinity level increasing to 4.69 dS m-1, survival % of T. distichum decreased to (56.40 and 61.70 %), whenever, salinity level increasing to 6.25 dS m-1 survival % of S. mahagoni decreased to (64.30 and 69.60 %) in both seasons, respectively. All growth parameters, i.e. (height of plant, diameter of stem , number of leaves, fresh and dry weight of leaves and roots, and length of root) decreased as the concentrations of saline water irrigation increased. Whereas, the highest values of free proline content, was gained by the highest concentration of saline water irrigation 6.25 dS m-1 and |