The onion (Allium cepa L., from Latin cepa "onion"), additionally recognized as the bulb onion or frequent onion, is a vegetable that is the most broadly cultivated species of the genus Allium. Its shut family consist of the garlic, scallion, shallot, leek, chive, and Chinese onion. This genus additionally includes countless different species variously referred to as onions and cultivated for food, such as the Japanese bunching onion (Allium fistulosum), the tree onion (A. ×proliferum), and the Canada onion (Allium canadense). The identify "wild onion" is utilized to a range of Allium species, however A. cepa is completely recognised from cultivation. Its ancestral wild unique structure is no longer known, though escapes from cultivation have turn out to be mounted in some regions. The onion is most regularly a biennial or a perennial plant, however is typically handled as an annual and harvested in its first developing season.
The onion plant has a fan of hollow, bluish-green leaves and its bulb at the base of the plant starts to swell when a sure day-length is reached. The bulbs are composed of shortened, compressed, underground stems surrounded via fleshy modified scale (leaves) that envelop a central bud at the tip of the stem. In the autumn (or in spring, in the case of overwintering onions), the foliage dies down and the outer layers of the bulb emerge as dry and brittle. The crop is harvested and dried and the onions are prepared for use or storage. The crop is susceptible to assault through a variety of pests and diseases, mainly the onion fly, the onion eelworm, and a range of fungi which can purpose rotting. Some sorts of A. cepa, such as shallots and potato onions, produce a couple of bulbs. Onions are cultivated and used round the world. As a meals item, they are normally served cooked, as a vegetable or phase of a organized savoury dish, however can additionally be eaten uncooked or used to make pickles or chutneys. They are pungent when chopped and incorporate positive chemical components which irritate the eyes.

In this sub category you can download free PNG images: Onion Vegetables. In this category "Onion" we have 121 free PNG images with transparent background.

  • Red Onion Transparent Background PNG Image
    Red Onion Transparent Background
    Format: PNG
    Resolution: 410x242
    Size: 115.2KB
    Downloads: 296
  • Onion Vector Transparent Image PNG Image
    Onion Vector Transparent Image
    Format: PNG
    Resolution: 455x455
    Size: 120.0KB
    Downloads: 303
  • Red Onion Transparent Image PNG Image
    Red Onion Transparent Image
    Format: PNG
    Resolution: 400x400
    Size: 125.8KB
    Downloads: 294
  • Onion Slice File PNG Image
    Onion Slice File
    Format: PNG
    Resolution: 468x400
    Size: 141.3KB
    Downloads: 336
  • Onion Slice Transparent Image PNG Image
    Onion Slice Transparent Image
    Format: PNG
    Resolution: 419x262
    Size: 144.5KB
    Downloads: 658
  • White Onion Image PNG Image
    White Onion Image
    Format: PNG
    Resolution: 467x383
    Size: 148.5KB
    Downloads: 334
  • White Onion PNG Image
    White Onion
    Format: PNG
    Resolution: 500x319
    Size: 155.1KB
    Downloads: 370
  • Onion Vector Clipart PNG Image
    Onion Vector Clipart
    Format: PNG
    Resolution: 668x720
    Size: 172.2KB
    Downloads: 312
  • Green Onion Transparent Image PNG Image
    Green Onion Transparent Image
    Format: PNG
    Resolution: 550x448
    Size: 177.7KB
    Downloads: 341
  • Red Onion File PNG Image
    Red Onion File
    Format: PNG
    Resolution: 480x480
    Size: 193.9KB
    Downloads: 366
  • Red Onion PNG Image
    Red Onion
    Format: PNG
    Resolution: 500x500
    Size: 197.9KB
    Downloads: 395
  • Onion Vector Image PNG Image
    Onion Vector Image
    Format: PNG
    Resolution: 600x547
    Size: 219.7KB
    Downloads: 348
  • Red Onion PNG Image
    Red Onion
    Format: PNG
    Resolution: 440x250
    Size: 225.5KB
    Downloads: 364
  • White Onion File PNG Image
    White Onion File
    Format: PNG
    Resolution: 600x555
    Size: 234.4KB
    Downloads: 301
  • Green Onion Image PNG Image
    Green Onion Image
    Format: PNG
    Resolution: 872x382
    Size: 300.1KB
    Downloads: 348
  • Green Onion File PNG Image
    Green Onion File
    Format: PNG
    Resolution: 872x301
    Size: 326.1KB
    Downloads: 473
  • Onion Vector PNG Image
    Onion Vector
    Format: PNG
    Resolution: 800x800
    Size: 356.6KB
    Downloads: 275
  • Red Onion Image PNG Image
    Red Onion Image
    Format: PNG
    Resolution: 680x548
    Size: 360.9KB
    Downloads: 341
  • Onion Slice Image PNG Image
    Onion Slice Image
    Format: PNG
    Resolution: 420x420
    Size: 370.2KB
    Downloads: 365
  • Red Onion Clipart PNG Image
    Red Onion Clipart
    Format: PNG
    Resolution: 654x557
    Size: 392.3KB
    Downloads: 419

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