The Effect of Different Concentrations of Magnetic Seawater on Different Plant Species Growth

Abstract

This study was carried out in the laboratory of botany faculty sciences at university of Benghazi during summer/ 2016. Two experiments were conducted first experiment was to determine the effects of different levels of water sea water dilutions of 1%, 2%, 5%, 10% and 20% on germination percentage, root and shoot lengths of five receptor plants: (tomato, wheat, cucumber, radish and lettuce). In this experiment, petri dishes lined with double layer of filter paper moisten with 5 ml of specific sea water dilution were used as medium for growth, the plates were irrigated daily with sea water dilution, this experiment was conducted in three replicate for each experiment, germination percentages were calculated at the end of the experiment the results of this experiment revealed that germination percentages of tomato varieties, decrease with increased sea water dilutions level, Both tomato verities are moderately sensitive to sea water dilutions, germination decreased at sea water dilution of 5%, no germination had occurred at higher dilutions of (10% and 20%). Both shoot and root length were reduced by increased sea water dilutions but shoot were more affected by sea water dilutions, Imported tomato was more sensitive to xix sea water dilutions than local tomato. Wheat and radish showed 100 % germination at all sea water dilutions levels, root and shoot of radish were not significantly affected by sea water dilutions.Cucumber and lettuce showed more sensitivity to sea water dilutions. The second experiment was to compare the effect of salinity with the effect of magnetic sea water. Seedling development experiment was conducted on radish and two varieties of tomato (local and imported), using different dilutions of sea water and magnetic sea water, three seeds of each plant were planted in pots and were irrigated for 40 days and development parameters were measured (whole plant length, shoot length, root length, dry weight, fresh weight, number of leaves, and leaves surface area, the results of the experiment revealed that, Radish development was not significantly affected by salinity, the impact of sea water dilutions stress on radish shoot, whole length and leaves number was significant, but sea water dilutions showed no significant effect on leaves surface area, root lengthen, dry and fresh weight, while in tomato all growth parameters were reduced with increased sea water dilutions levels. Negative impact of magnetic sea water on seedling development of radish and tomato were observed in this experiment.