Chilling injury in mangoes.
Arafat L. A. E. T.
Author Affiliation: Horticultural Production Chains Group, Department of Plant Sciences, Wageningen University, Marijkeweg 22 (Building Number 527), 6709 PG Wageningen, Netherlands.
: 224 pp.
Abstract : This thesis focuses on the phenomenon of chilling injury in mango fruits and the various factors affecting its development. Two Egyptian mango cultivars (Zibdia and Hindi Be-Sennara) were used as models. The former is chilling sensitive, while the latter is relatively resistant to chilling conditions. Chilling determining conditions (such as fruit maturity, storage time and storage temperature) were varied to get an insight into the mechanism of chilling phenomenon in Chapter 2. The development of chilling injury symptoms in both mango cultivars and the variation of chlorophyll fluorescence were studied in Chapter 3. Development of chilling injury in fruits is caused by the activities of antioxidants in fruits. Antioxidants classified into water and lipid-soluble antioxidants (such as ascorbic acid, ?-tocopherol and ?-carotene) and antioxidant enzymes (such as superoxide dismutase, catalase, glutathione reductase and ascorbate peroxidase) were studied in Chapter 4 and 5, respectively. Finally, the physiological changes occurring during storage of mangoes (such as ethylene production, respiration rate, firmness and ion leakage) were studied in Chapter 6.