ISHS Acta Horticulturae 272: Symposium on Bedding and Pot Plant Culture
TEMPERATURE EFFECTS SCHLUMBERGERA TRUNCATA 'MADISTO' FLOWER INITIATION |
| Authors: | J. Erwin, R. Heins, R. Berghage, B. Kovanda |
| Abstract:
Schlumbergera truncata 'Madisto' plants were grown under 19 different day/night temperature (DT/NT) environments ranging from 10°C to 30°C with a 9 hour photoperiod. Time from initiation of SD to anthesis varied from 50 days in the 20°C DT/ 25°C NT environment to 99 days in the 10°C DT/ 15°C NT environment. Flower initiation did not occur when plants were grown under the following DT/NT temperature environments, 10°/30°C, 30°/10°C, 25°/25°C, and 30°/30°C. Instead, only phylloclades developed. Plants grown in other environments had only flowers or both flowers and phylloclades. An optimal temperature for flower initiation, based on the ratio of flowers to phylloclades, existed at 20°C. Phylloclade number increased as DT increased and as DT increased relative to NT. Phylloclade number was greatest in the 30°C DT/10°C NT environment. | |
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