Abstract
This study determined the chilling injury interactions of sweet peppers with their hydroponic growth substrate. The treatments were cocopeat, perlite, and a mixture of 50:50 cocopeat and perlite (coco-perlite). The fruits, when harvested, were stored for 50 days using the modified atmosphere package (MAP) at 5 °C. The results revealed no significant interactions between the growth substrate and the chilling injury indicators (respiration and ethylene production rates, electrolyte leakage, malondialdehyde), even though a significant interaction existed with the chilling injury index (a water-soaked area). This is believed to be due to the growth substrate’s significant interactions with soluble solids and dry matter, which aided cellular balance and increased chilling injury tolerance in perlite and coco-perlite treatment. Weight loss rate and firmness loss were insignificant in all treatments, and cocopeat treatment may be considered the worst of all treatments.
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