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자료유형
학술저널
저자정보
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.47 No.4
발행연도
2006.8
수록면
198 - 202 (5page)

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Heating during winter is unavoidable in greenhouse production of spring flowering potted cyclamen. Long-day (LD) treatment to promote the flowering of many LD plants is considered as alternative methods to heating. This research was conducted to determine the flowering response to temperature and photoperiod according to growth stages [stage Ⅰ, flower bud initiation (from 5-unfolded leaves to 2 ㎜ visible bud (VB); stage Ⅱ, flower bud development (for 9 weeks after VB)]. ‘’Metis Purple’ cyclamen seedlings during stage Ⅰ or Ⅱ were grown under growth chambers maintained at 8, 12, 16, and 20℃ in combination with LD (16 h) or short-days (SD, 8 h). After treatments, all plants were transferred to a growth chamber maintained at 22/16℃ (day/night). In stage Ⅰ, VB initiation was hastened by 8 to 13 days in plants grown at 16 and 20℃ compared to those grown at 12℃. LD hastened the emergence of VB by 8 days at 20℃ and 6 days at 16℃. VB was not observed under either LD or SD at 8℃, and 8h at 12℃. During stage Ⅱ, high temperature and LD hastened flowering. There was no difference in flowering between 8 h-20℃ and 16 h-16℃, and also no difference between 8 h-16℃ and 16 h-12℃, indicating that day-extension lighting could substitute for expensive heating. The information is useful in low energy cost production without flowering delay in winter.

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Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgement
Literature Cited

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