As energy gradually becomes a more valuable commodity, the desire for reduced energy losses strengthens. Lighting is a critical field on this matter, as it accounts for a large percentage of the global electricity con...As energy gradually becomes a more valuable commodity, the desire for reduced energy losses strengthens. Lighting is a critical field on this matter, as it accounts for a large percentage of the global electricity consumption and modern lighting systems are greatly more efficient than incandescent, discharge, and fluorescent lights. Previous research has proven that plants do not require the entire visible spectrum but react only to specific wavelengths, making it possible to control their growth and yield via artificial lighting. The flexibility of control of Light Emitting Diode (LED) lights allows for the combination of great energy losses reduction and controlled plant growth, achieving the improvement of two major parameters in a single action. This review paper summarizes the current research on the effect different light wavelengths have on specific plant species and discusses the applications of LED lighting for horticulture, yield storage, and disease protection.展开更多
Objective:To compare different artificial light sources in different places where plant breeding is conduced.Methods:Measurements were conducted outdoor,in room,in greenhouse,under four panels with light emitting diod...Objective:To compare different artificial light sources in different places where plant breeding is conduced.Methods:Measurements were conducted outdoor,in room,in greenhouse,under four panels with light emitting diodes,in phytotron,in dark room with various light sources and inside Sanyo versatile environmental chamber.The measurements were made by using SpectraPen SP100(PSI,Czech Republic)device.Results:Our result showed that spectrum measured outdoor during sunny day had only one peak at the wavelength of 485 nm(ca.60000 relative units).On cloudy day,the trend of light spectrum curve was similar,but with lower values.At room conditions,the curve was more flat than outdoor.Under greenhouse conditions,the curve was similar to that measured outdoor.A few additional peaks on the curve appeared by adding high pressure sodium lamp.There were changes of curve under LED panels.Conclusions:It must be underlined that the most similar spectrum curve to daylight light has incandescent bulb and this light source should be preferred as support of daylight in greenhouses and as main source in phytotrons.Using high pressure sodium lamp in greenhouses as support of daylight cause increase in the red/far-red ratio and occurrence of a new peak on spectrum curve.The new possibilities are creating by LED panels with red and blue diodes.展开更多
文摘As energy gradually becomes a more valuable commodity, the desire for reduced energy losses strengthens. Lighting is a critical field on this matter, as it accounts for a large percentage of the global electricity consumption and modern lighting systems are greatly more efficient than incandescent, discharge, and fluorescent lights. Previous research has proven that plants do not require the entire visible spectrum but react only to specific wavelengths, making it possible to control their growth and yield via artificial lighting. The flexibility of control of Light Emitting Diode (LED) lights allows for the combination of great energy losses reduction and controlled plant growth, achieving the improvement of two major parameters in a single action. This review paper summarizes the current research on the effect different light wavelengths have on specific plant species and discusses the applications of LED lighting for horticulture, yield storage, and disease protection.
基金supported by The National Centre for Research and Development(NCBiR)Poland(Grant:Biostrateg-I/2489/2014).
文摘Objective:To compare different artificial light sources in different places where plant breeding is conduced.Methods:Measurements were conducted outdoor,in room,in greenhouse,under four panels with light emitting diodes,in phytotron,in dark room with various light sources and inside Sanyo versatile environmental chamber.The measurements were made by using SpectraPen SP100(PSI,Czech Republic)device.Results:Our result showed that spectrum measured outdoor during sunny day had only one peak at the wavelength of 485 nm(ca.60000 relative units).On cloudy day,the trend of light spectrum curve was similar,but with lower values.At room conditions,the curve was more flat than outdoor.Under greenhouse conditions,the curve was similar to that measured outdoor.A few additional peaks on the curve appeared by adding high pressure sodium lamp.There were changes of curve under LED panels.Conclusions:It must be underlined that the most similar spectrum curve to daylight light has incandescent bulb and this light source should be preferred as support of daylight in greenhouses and as main source in phytotrons.Using high pressure sodium lamp in greenhouses as support of daylight cause increase in the red/far-red ratio and occurrence of a new peak on spectrum curve.The new possibilities are creating by LED panels with red and blue diodes.
