Chilling Injury Of Fruits And Vegetables Occur At
The critical chilling temperature in group c plants is lower than that in group b plants.
Chilling injury of fruits and vegetables occur at. Chilling induced browning in fruit typically appears first around the vascular transport strands. Pitting can occur on citrus fruits cucumbers eggplant melons okra papayas pomegranates sweet peppers sweetpotatoes and tamarillos. It was concluded that chilling injury occurs after 10 days in mango cv.
Most crops of tropical and subtropical origin are sensitive to chilling injury. Both flowers and fruit of sensitive species can be injured. Browning or blackening of flesh tissues is another common feature of chilling injury e g.
Alleviating chilling injury in tomato fruits in response to exogenous melatonin application at 100 μm may ascribe to providing sufficient intracellular atp occur by higher h atpase ca atpase cytochrome c oxidase cco. It usually occurs at 10 to 13c. By examination of the detrimental effect of ci on crop yields storage expenses and import requirements one can appreciate the severity of the problem.
Plants of tropical or subtropical origin are most susceptible. At these temperatures the tissues weaken because they are unable to carry on normal metabolic. Chilling injury affects many fruits and vegetables.
Ci produces physiological damage to many fruits and vegetables as a result of their exposure to chilling temperatures resulting in serious quality and economic losses. Necrosis as in seeds of eggplants peppers and tomatoes. Browning can result from the action of the polyphenoloxidase ppo enzyme on phenolic compounds released from the vacuole during chilling but this mechanism has not been proven in all cases.
Chilling injured leaves may become purple or reddish and in some cases wilt. It usually occurs at 3 or 4c. In this study the mechanism recruited by exogenous melatonin application at 100 μm for alleviating chilling injury in tomato fruits during cold storage was investigated.