GROWTH AND FLOWERING OF ANEMONE CORONARIA L. 'DE CAEN'

Regardless of the planting date or temperature, all corms emerged. The 20° C treated corms emerged the earliest, followed by 15°, 10°, 5° and 0° C. The 4 weeks 5° C corm treatment resulted in 100 % floral primordia development 4 weeks after planting. Initiation of floral primordia with non-cold corms was slower than with the cooled corms and consequently anthesis was delayed by 30 days. Regardless of cold treatment, days to anthesis were shortest at 20° C, followed by 15°, 10° and 5° C. Flowers number per plant and stem length was highest at 10° C, but flower weight and stem diameter were best at 5° C. Photoperiod treatments were not significant, although long day did hastened flowering. Low temperature forcing treatment from a practical view point, is valid as when low temperature treatment began in August, the 10° C 4 weeks treatment was optimum for rapid flowering, high number flower, flower weight, stem diameter for production from October to February.

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