•Onion Diseases Alliums
•Alliaceae or lily family : Allium genus :
–Onion ( Allium cepa )
–Garlic ( Allium sativum )
–Shallot ( Allium ascalonicum)
–Leek (Allium porrum)
–Chive (Allium schoenoprasum)
–Scallions ( Allium fistulosum)
–Others:
§Multiplier or Potato Onion: Allium cepa var. aggregatum
§Egyptian tree Onion: Allium cepa var. vivip
•Onions are 2nd most the important vegetable crop.
•350 species in Allium genus, the onion is likely the most important.
•Onions originate from either central Asia or Iran and west Pakistan .
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