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
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.
