Kiyomi' Tangor(Citrus unshiu Marc. ×C. sinensis Osb. ) is recognized as a high -quality late -season citrus fruit. Unfortunately, this variety is vulnerable to Kohansho, a serious, non-chilling physiological rind Key words:postharvest treatments, perforated film packaging, hot water dip, kohansho, 'Kiyomi' Tangor