Abstract

Info

Title:: Effect of LED Light Quality on Growth and Nutrient Quality of Ice Plant

Author(s):: LIU Shujuan; ZHOU Hua; LIU Tengyun; YANG Aihong; LI Yanqiang; YU Faxin; (Institute of Biology and Resources,Jiangxi Academy of Sciences/Key Laboratory of Horticultural Plant Genetic and Improvement of Jiangxi，Nanchang，Jiangxi 330096)

Keywords:: ice plant; light-emitting diode; light quality; growth quantity; nutrient quality

Abstract:: To study the effect of LED light quality on vegetative growth and nutritional quality of ice plant,seven light qualities were set up under plant factory and hydroponic conditions,which were red,blue,red∶blue=4∶1,red∶blue∶green=4∶1∶1,red∶blue∶ultraviolet light (UV-B)=20∶5∶1,red∶blue=8∶1,and with white light as control.The different of growth trend,growth quantity and nutritional quality of ice plant under different light treatments were measured and analyzed.In order to provide the scientific basis and technical guidance for the scale planting of ice plant.The results showed that from the growth curve and fresh weight of ice plant,both red∶blue=8∶1 and red∶blue∶UV-B=20∶5∶1 light quality had the best growth trend,the fastest growth speed,the largest growth volume,the largest fresh weight and the over ground part.While according to the nutritional quality of ice plant,all three components vitamin C,soluble protein and soluble sugar content were the highest in red∶blue∶UV-B=20∶5∶1 light quality treatment,which were superior to other light treatments.Taking into account the nutritional quality and growth amount of ice plant,red∶blue∶UV-B=20∶5∶1 was the most suitable ratio of light quality.A small amount of ultraviolet UV-B（red∶blue∶UV-B=20∶5∶1） was more conducive to the improvement of ice plant quality.