THE EFFECTS OF LIGHT INTENSITY AND FERTILIZER RATE ON THE ACCLIMATIZATION POTENTIAL OF CHAMAEDOREA ELEGANS

in HortScience
Authors:
Trinidad ReyesDepartment of Environmental Horticulture, University of Florida, Gainesville, FL 32611

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Terril A. NellDepartment of Environmental Horticulture, University of Florida, Gainesville, FL 32611

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Charles A. ConoverDepartment of Environmental Horticulture, University of Florida, Gainesville, FL 32611

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James E. BarrettDepartment of Environmental Horticulture, University of Florida, Gainesville, FL 32611

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Effects of three light intensities (564, 306 and 162 μmol m-2 s-1) and three fertilizer rates (220, 440 and 880 mg/15 cm pot, weekly) were evaluated on acclimatization potential of Chamaedorea elegans. Treatments were applied during four months under greenhouse conditions after which plants were placed indoors (20 μmol m-2 s-1, 21±2C and 50% RH) for two months. Light compensation point (LCP) was significantly reduced by decreasing light intensity and increasing fertilizer rates. Leaf and root fresh and dry weights increased with irradiance while shoots were not affected. Chlorophyll a levels were higher in plants grown under the lowest light intensity. Carbohydrate content is being analyzed and anatomical examination of leaves studied. Plant performance indoors will be discussed. These studies demonstrate that Chamaedorea, a monocot, acclimatizes similarly to dicots.

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