الفهرس 
Ameliorating Salinity Tolerance of Cucumber Plants with water treatments residuals nanoparticles byOnly 14 pages are availabe for public view
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Abstract
Salinity is one of the major abiotic factors that limit plant growth and productivity in many re¬gions of the world. Therefore, many trails and approaches have been attempted to mitigate the well-known negative effects of salinity on plant growth and production.The objectives of this study were to characterize the physical and chemical properties of nanoscale water treatment residuals (nWTRs), and to evaluate the impact of the nWTR and salinity stress on physiological parameters such as germination, root growth, chlorophyll content,enzyme content such as catalase and peroxidase, soluble protein, in plant. To achieve these objectives, these experiments were conducted as follows:
Seed germination experiment: Cucumber seeds (Cucmis sativus) were soaked in Erlenmeyer flask containing a combination treatments of nWTRs and saline solution with seven concentrations of 0 (control), 10, 100, 250, 500, 750 and 1000 mg/ L nWTRs and five concentrations of 0 (control), 2, 4, 6, and 11 dS/m-1 sea water in DI water for 3 h, and then germinated on moist filter paper in Petri dishes at 28oC. Five seeds were placed on each Petri dish; there were three replicate dishes for each treatment. After 36 h, germination rate and root growth were measured.
1- Increasing salinity levels significantly reduced germination percentage of both priming levels. This reduction in germination percentage (%) was significantly higher for seeds primed in fresh water compared to ones primed in nWTR. The reduction in germination percentage occurred at high salinity levels was due to the bad effect of salinity on physiological processes which are effective on seed germination
2- Priming seeds of cucumber in different concentrations of nWTRs (0, 10,100, 250,500,750, and 1000 mgL-1) significantly increased the salt tolerance index, but the1000 mgL-1 had the best effect.
3- Seeds priming in nWTRs and different salinity levels significantly improved cucumber radicle length, especially at 1000 mg.L-1 nWTRS exposed to salinity stress.
4- Priming seeds of cucumber in different concentrations of nWTRs significantly decreased the root radius, but the1000 mgL-1 had the best effect at which low value of RR.
5- Root surface area of cucumber seedling derived from seeds primed in nWTR was significantly increased at different salinity levels in comparison with ones primed in fresh water .
6- Increasing salt concentration in culture medium reduced total fresh weight,however priming the cucumber seeds in nWTRs concentrations significantly increased total fresh weights of seedlings in comparison with priming in fresh water seeds.