الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Onion (Allium cepa L.)belongs to the Lilliaceae family and is grown all over the world. After tomatoes,they are second most horticultural. it has been widely used even in ancient times as seasonings,foods and for medical uses.In current times, onion is an important vegetable to serve as ingredients in dishes, as toppings on burgers, in seasonings, as chip coatings etc, It has been valued for their medicinal qualities by many cultures around the globe. Numerous health benefits have been attributed to vegetable, including prevention of cancer and cardiovascular disorders.