Onion is a common vegetable, and can be served cooked or raw. For medicinal purposes, onion is available for internal use as a capsule or tablet containing dehydrated onion or onion extract.
Onion has also been shown to contain antioxidants , which are compounds that protect the body against free radicals.
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The shallot(Allium cepa var. aggregatum, or the Aggregatum group A. cepa) is a botanical variety of the species Allium cepa, to which the multiplier onion also belongs.[1] The shallot was formerly classified as a separate species, A. ascalonicum, a name now considered asynonym of the currently accepted name.[2] The genus Allium, which includes onions and garlic as well as shallots, is now classified in the plant family Amaryllidaceae, but was formerly considered to belong to the separate family Alliaceae.The scientific name is Allium oschaninii( The shallot)The varieties of crop plants ( Including onion ) are not given scientific or botanical names .The onion that you have in mind is internationally known as" Chinna vengayam ' OR ' Sambar vengayam' as you have described. It is commonly called shallot.The shallot is a relative of the onion, and tastes a bit like an onion but has a sweeter, milder flavor.They are more expensive than onions and can be stored for at least 6 months.Some say you can substitute about 1/2 the amount of finely-chopped onion (preferably red onion) and (optionally) add some garlic in place of shallots.Unlike onions where each plant normally forms a single bulb, shallots form clusters of offsets, rather in the manner of garlic.
Onion is a term used for many plants in the genus Allium. They are known by the common name "onion" but, used without qualifiers, it usually refers to Allium cepa.[1] Allium cepa is also known as the "garden onion" or "bulb" onion. Above ground, the onion shows only a single vertical shoot; the bulb grows underground, and is used for energy storage, leading to the possibility of confusion with a tuber, which it is not.[2] It is a close relative to garlic.Allium cepa is known only in cultivation,[3] but related wild species occur in Central Asia. The most closely related species include Allium vavilovii (Popov & Vved.) and Allium asarense (R.M. Fritsch & Matin) from Iran.[4] However, Zohary and Hopf warn that "there are doubts whether the A. vavilovii collections tested represent genuine wild material or only feral derivatives of the crop."[5]
Onion (Allium cepa) has 16 chromosomes (2n= 16)
allium
Onion.
Allium cepa is the common Onion.
Allium cepa is an onion.
allium Cepa
Onion (Allium cepa) has 16 chromosomes (2n= 16)
Allium cepa, the botanical name for the Onion
The fleshy bulb that grows below the ground is used medicinally as well as for food.
Onion has also been shown to contain antioxidants , which are compounds that protect the body against free radicals.
allium
An Onion belongs to the The bulb plants family like lily galic etc.
The ancient Romans called an onion caepa or cepa.The modern scientific term is Allium cepa, which in Latin is literally "Garlic onion".