上海农业学报2017，Vol.33Issue(3)：41-47,7.DOI:10.15955/j.issn1000-3924.2017.03.08
两种LED光源作为拟南芥生长光源的应用探究
Applied research on two LED light sources in Arabidopsis growth
摘要
Abstract
In order to explore the effects of LED light sources on Arabidopsis growth,with a white fluorescent lamp as control,two mixed-type LED light sources' effects on Arabidopsis growth and development period were comparatively tested in a phytotron.The light source LED-1 was composed of red,white and far-red lights,the spikes were 449 nm,660 nm and 733 nm respectively,and its red/blue light ratio was about 5 times as large as the control;The light source LED-2 was composed of red,blue and far-red lights,the spikes were 465 nm,665 nm and 733 nm respectively,and its red/far-red light ratio was about 4 times as large as the control.The results showed that the growth vigor of Arabidopsis under LED-2 was better than that under the control,with the flowering being 3 days earlier,and the plant height,the stem diameter,the branch number,the silique number,the aerial part's fresh weight (dry weight),and the seed yield increasing by 9.2％,12％,11.7％,57％,37.2％ (93.3％) and 39.2％ respectively.Under LED-1 Arabidopsis flowered 6 days earlier and its branch and silique numbers increased by 150.6％ and 54％ respectively,but its growth vigor was lower than that under the control,with the plant height,the stem diameter,the aerial part's fresh weight (dry weight),and the seed yield decreasing by 9.8％,22.3％,42.2％ (18％) and 23.9％ respectively.The chlorophyll contents under LED-1 and LED-2 were both lower than that under the control.Under LED-2 the leaves had a higher competence in photochemical reaction,with the ΦPS Ⅱ,ETR and qP increasing by 18.8％,17.6％ and 18.4％ respectively.The Fv/Fm under all the treatments had no significant difference.From the above results it was concluded that applying LED light sources in Arabidopsis growth is feasible and can save on energy by 27.1％-35.7％;Appropriately increasing the ratio of red light in light source is beneficial to Arabidopsis growth,development,photosynthesis,biomass accumulation and seed setting;Far-red light can significantly accelerate Arabidopsis growth speed and make the reproductive growth earlier but easily cause the premature senility and the poor growth at later stage.关键词
拟南芥/生长/光源/LED/光谱成分Key words
Arabidopsis/Growth/Light source/LED/Spectral component分类
农业科技引用本文复制引用
李莉,李佳,高青,袁方,陈金星..两种LED光源作为拟南芥生长光源的应用探究[J].上海农业学报,2017,33(3):41-47,7.基金项目
中国科学院战略性先导科技专项(A)(XDA08040103) （A）
