ISHS Acta Horticulturae 141: II International Symposium on Carnation Culture
TEMPERATURE AND DAYLENGTH RESPONSES IN DIANTHUS CARTHUSIANORUM CV. NAPOLEON III |
| Author: | R. Moe |
| Abstract:
Low temperature promoted lateral shoot development and flower initiation, but delayed the rate of development of flower buds and flowers. At lower temperatures (12–15 °C) a high number of flowering shoots and flower buds per shoot was formed. The shoot length was greater at low than at high temperatures. High day/low night temperature promoted shoot elongation and flower initiation. Low day/ high night temperature had the opposite effect. Short photoperiods delayed flower initiation and appearance of flower bud, but promoted lateral shoot development. By increasing the photoperiod with low-intensity incandescent lighting, flower initiation, days to visible flower bud, percentage of flowering shoots and shoot elongation was enhanced. The further development of the flower bud to flower was not affected by the photoperiod. | |
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