The genus Allium comprises about 700 species. Several of them are important vegetables, spices and medicinal plants. The most important crop species are onion and shallot, Allium cepa L., garlic, Allium sativum L., leek, Allium ampeloprasum L. s.l., bunching onion, A. fistulosum L., chives, A. schoenoprasum L., Chinese chives, A. tuberosum Rottl. ex Spr., and rakkyo, A. chinense G. Don. Many ot...