Search Results
Abstract
Time and temp requirements for floral induction in the Amazon lily were found to be 12 days at 29.4°C (85°F) or 3 weeks at 19.4°C (67°F). Greater numbers of bulbs flowered, however, when heated for 16 days at 29.4°C or 3 weeks at 20.6°C (69°F). No detrimental effects, as indicated by percent flowering and flowers per scape, were apparent when bulbs were heated for 4, 5, 6, 7, 8, or 9 weeks at 29.4°C. Total production time was increased as treatment period was extended, but appeared to be definitely modified by season. Days after heating to first flower progressively decreased and total flowers per scape increased as growing conditions improved in spring. The fall crop showed an opposite response.
Abstract
Floral initiation was induced by heating leafy bulbs for 3 weeks at 70 or 75°F, or 2 weeks at 80, 85 or 90°. Bulbs held at 65° remained vegetative. Heating bulbs for periods longer than 2 weeks (5 weeks max) merely extended the time to flower and indicated that little floral development took place until plants were removed from heating.