Storage of recalcitrant seeds of Antiaris toxicaria (Moraceae)
Seeds of the tropical tree Antiaris toxicaria have typical recalcitrant storage behaviour. The purpose of this work was to examine the effects of temperature and moisture content (MC) on germination during storage. Germination of seeds with a MC of 1.14, 0.90, 0.76 or 0.68 g H2O g-1 DW was not significantly reduced when stored at 15°C for one year. However, seeds with a MC of 0.90 or 0.68 g g-1 DW stored at -20°C for one month lost viability, as did approximately 50% of those at 4°C. After one year, seeds with a MC of 0.90 g g-1 DW stored at 15°C had significantly higher germination percentage than those stored at -20, 4, 10 and 25°C; seeds with a MC of 0.68 g g-1 DW stored at 25°C had significantly higher germination percentage than those stored at -20, 4, 10 and 15°C. Thus, the lower the MC (0.68 g g-1 DW) of seeds, the higher the storage temperature (25°C) required to ensure seed survival.
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Document Type: Research Article
Publication date: April 1, 2014
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