Temperature and long-day lighting strategy affect flowering time and crop characteristics in Cyclamen persicum

Title
Temperature and long-day lighting strategy affect flowering time and crop characteristics in Cyclamen persicum
Author(s)
오욱강경주[강경주]조경진신종화[신종화]김기선[김기선]
Keywords
NIGHT INTERRUPTION; PHOTOPERIOD; GROWTH; IRRADIANCE; PROMOTE; PETUNIA; PETIOLE; STAGE
Issue Date
201312
Publisher
KOREAN SOC HORTICULTURAL SCIENCE
Citation
HORTICULTURE ENVIRONMENT AND BIOTECHNOLOGY, v.54, no.6, pp.484 - 491
Abstract
Long-day treatments such as day extension (DE) and night interruption (NI) lighting during short day and cold seasons can promote the growth and flower development of Cyclamen persicum and cyclic NI lighting (CL) can reduce the lighting cost as compared with continuous NI. To compare the effect of CL with continuous NI or DE under different temperatures, cyclamen (Cyclamen persicum Mill.) 'Metis Red' was grown until full bloom at 12, 16, or 20A degrees C during dark period in combination with six photoperiods: 9-hour short days (08:00-17:00) with natural sun light (SD), SD + 6-hour DE (17:00-23:00), SD + 2-hour (23:00-01:00) or 4-hour (22:00-02:00) NI, and 10% [6 min on and 54 min off (6/54) for 4-hour] or 20% [6 min on and 24 min off (6/24) for 4-hour] CL. Compact fluorescent lamps used as the light source delivered about 3 mol center dot m(-2)center dot s(-1) PPFD at the canopy level. Plants grown at 20A degrees C during the dark period had visible buds and open flowers earlier by 7 days than those grown at 16 or 12A degrees C. The NI and CL hastened flower bud initiation and flowering, and promoted plant growth as compared with SD at each growing temperature. Plants grown at 16 and 12A degrees C with all NI treatments had the higher numbers of flower buds, leaves, and flowers than those grown at 20A degrees C under SD. Using CL lighting and 16A degrees C could reduce cyclamen production costs during winter by as much as 83% as compared to a natural light and 20A degrees C. Therefore, CL can substitute for continuous NI or heating that enhances the flowering of cyclamen during SD and cold seasons, reducing heating and lighting costs.
URI
http://hdl.handle.net/YU.REPOSITORY/28096http://dx.doi.org/10.1007/s13580-013-0111-1
ISSN
2211-3452
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자연자원대학 > 원예생명과학과 > Articles
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