AbstractThis chapter selectively reviews research published since the preparation of Onions and Allied Crops [see Rabinowitch, H.D. and Brewster, J.L. Onions and Allied Crops, 3 Vols. CRC Press, Boca Raton, Florida. 1990, 273, 320 and 265 pp.], presenting significant advances in onion pre- and postharvest science.