Abstract
Abstract Aglaonema ‘Silver Queen’ exposed to 4.5°, 13°, or 21°C for 10 hr each night for 1, 3, or 6 nights exhibited visual damage that increased as temperature decreased or as length of exposure increased. Growth index was negatively correlated with length of exposure in growth chambers, but exhibited no response to temperature. Leaf areas of new leaves exhibited reduced values at the lowest temperature and longest durations, but measurements of effusate conductivities, total leaf area, and number of new leaves were not affected by treatments. Microscopic examination of visually damaged leaves showed collapsed epidermal cells, while stem sections of chilled plants had a reduced number of starch grains.
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