4. DiscussionTomato is one of the most important food plants in the world,and its demand is continuously increasing being necessary to extend the commercial period and diminish the postharvest losses.When tomato is stored at low temperatures, it suffers chilling injurycausing economic and effort loss (Kader, 1986). Many studies havebeen carried in order to understand the mechanism by which thisphysiological disorder is generated, but many aspects need to beclarified yet. Otherwise, it is clear that the chilling injury dependsupon many factors including cultivar, preharvest conditions andchilling temperature-time combination. Tomato cv. “Micro-Tom”is a dwarf tomato widely used as a laboratory model that combinesthe benefits of studying a specie with economic importance withthe short life cycle and small size suitable for a biological modelbringing basic and applied sciences together. In addition, tomato