A STUDY OF SOME ASPECTS OF ENVIRONMENTAL ADAPTATION OF DATE PALM PHOENIX DACTYLIFERA L. SEEDLINGS UNDER STRESS CONDITIONS

Abstract

This study was conducted to know some aspects of physical, chemical and anatomical that associated with salt and water stress conditions for seedlings of the date palm resulting from planting the seeds of date palm CV. Hillawi, which treated with some treatments of salinity (sodium chloride) and irrigation. The results showed that a difference of the treatments was significant for all characteristics, salinity concentration (6000 mg l-1) significantly decreased all of those characteristics that recorded the lowest rates, while treatment (0) mg l-1 gave higher rates for the same characteristics. Treatment of daily irrigation gave highest of those characteristics. The interaction between salinity and irrigation treatments (6000 mg l-1 and monthly irrigation) gave a lower rates of all characteristics; seedling diameter has reached 7.66 mm, leaf width 18.29 mm, wet weight of the leaves 5.19 g, dry weight of the leaves 2.52 g, wet weight of roots 3.51 g, dry weight of roots 1.23 g, the total chlorophyll content of the leaves 2.16 mg 100 g-1, nitrogen 4.74 g kg-1, carbohydrates 30.29 mg100g-1, the highest rate of the content of the leaves of proline 0.99 μg g-1 and the highest rate of cuticle thickness 7.74 .mμ