Onion has also been shown to contain antioxidants , which are compounds that protect the body against free radicals.
An Allium is a member of the onion family.
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 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]
1. The cells of an onion skin are generally rectangular in shape and range in size from 0.25 to 0.4 millimeters in length (250-400 micrometers). A millimeter is abbreviated by mm and a micrometer by the Greek letter mu (12th letter of Greek alphabet) followed by an m:millimeterabout 1/25th of an inchmicrometer1/25,000th of an inchLeft: Microscopic view of an onion skin showing several rectangular cells, each with a small, spherical nucleus (red arrow). The slide was stained with a drop of yellowish-brown gram's iodine. Right: Highly magnified view of a cell from the meristematic root tip of an onion showing enlarged nucleus containing 16 chromosomes. The cell is in prophase of mitosis, with distinct chromosomes (chromosome doublets) and a disintegrating nuclear membrane.Onion is a term used for many plants in the genus Allium. They are known by the common name "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 onion" but, used without qualifiers, it usually refers to Allium cepa.
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.
allium
Allium cepa is the common Onion.
Allium cepa is an onion.
An Allium is a member of the onion family.
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.
allium
allium Cepa
the onion and garlic family
the skin of an onion
The fleshy bulb that grows below the ground is used medicinally as well as for food.
Allium