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effect of salinity

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effect of salinity
University of Bahrain
College of science
Department of biology

The Effect of Salinity on Seed Germination

1) Abstract:
Poor seeding growth can be the result of soil salinity. A study was done to examine the influence of NaCl salinity treatment on the germination and seeding grow of vigna radiata using different NaCl concentration 0 (control) , 0.25 , 0.5 , 1.0 , 1.75 . A graph was used to analyze the data obtained from the study. Important differences among the treatment were indicated as a result of this study. The germination percentage of vigna radiata seed and radicle growth was reduced when treated by Sodium Chloride solution .The salt concentration (0.25%) had the higher germination percentage. As a result , the findings from the study state that the vigna radiata seeds are very sensitive and highly affected by salt water.

2) Introduction:
Soil salinity is a worldwide problem that negatively affects crop production in areas of the world where irrigation is used to produce crops. Salinity is a problem for plant growth which is reduced as a result of the soluble salt in the soil. These salts are too high in the soil and as a result they are difficult to be managed or controlled. Plants exposed to salt stress undergo changes in their metabolism place in their environment. This make water unavailable to plants , which results in reduced water up take (Mwai , 2001).
Imbibition is a diffusion process of water in plants where the net movement of water is along a diffusion gradient salinity inhibits the seed ability to imbibe (absorb) water and a result germinating seed would become non-viable and die.
There is considerable evidence that many crop plants are particularly sensitive to soil salinity during germination and seeding growth crops growing on soil subject to salinization are frequently interspersed a sharp demarcation between fair growth of plant and no plants at all. These barren spots often delimit the areas where



References: http://aob.oxfordjournals.org/content/82/2/167.abstract http://www.regional.org.au/au/asa/2008/poster/agronomy-landscape/5700_fallah.htm http://www.amjbot.org/cgi/content/full/90/1/131 http://www.idosi.org/wjas/wjas3(3)/11.pdf دعواتكم .. ~ وردة البحر

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