研究目的
Investigating the effects of the quality and quality shifting of the night interruption light (NIL) using light-emitting diodes (LEDs) on the morphogenesis, flowering, and transcription of photoreceptor genes in three representative photoperiodic model plants.
研究成果
The morphogenesis and flowering of the three photoperiodic model plants were significantly affected by the NIL quality, especially in the short-day plant. NI-R or NI-W was most suitable for controlling morphogenesis and flowering of long-day plants during SD seasons. B light may have applicability for flowering control in short-day plants.
研究不足
The study focused on specific model plants and may not be directly applicable to all floricultural crops. The effects of light quality shifting on photoreceptor gene expression and protein production require further investigation.
1：Experimental Design and Method Selection:
The study involved growing plants under different light conditions (LD, SD, SD with NI) using LEDs of various colors (B, G, R, Fr, W) for NI.
2：Sample Selection and Data Sources:
Petunia hybrida, Pelargonium × hortorum, and Dendranthema grandiflorum were used as model plants.
3：List of Experimental Equipment and Materials:
Closed-type plant factory, LEDs (MEF50120, More Electronics Co. Ltd.), photo-radiometer (HD
4：1, Delta OHM), spectroradiometer (USB 2000 Fiber Optic Spectrometer, Ocean Optics Inc.). Experimental Procedures and Operational Workflow:
21 Plants were acclimatized, then subjected to photoperiodic treatments with measurements taken on morphogenesis and flowering.
5：Data Analysis Methods:
Data on shoot length, plant height, number of leaves, chlorophyll content, flowering percentage, and days to visible buds were analyzed.
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