中文摘要：

采用发光二极管（light emitting diode,LED）调制光谱能量分布,以荧光灯作为对照,研究光质对油葵芽苗菜生长和品质的影响。研究表明：在光照强度23μmol.m-2.s-1、光周期14 h.d-1和温度（25±2）℃的条件下,红光处理显著提高子叶面积、下胚轴直径、淀粉含量、叶绿素总量/类胡萝卜素含量,与其他光质处理相比,红光下油葵芽苗菜叶绿素a、叶绿素总量和类胡萝卜素含量显著提高;蓝光显著提高芽苗菜干物质、可溶性蛋白含量及POD、CAT活性;黄光对根长有抑制效果,而对游离氨基酸的积累有促进作用;UV-B显著提高下胚轴长度和SOD、CAT的活性。综上所述,红光照射有利于油葵芽苗菜生长及品质提升。

英文摘要：

The effects of light spectral energy distribution of light emitting diode（LED）on the growth and quality of Helianthus annuus sprouts were studied.Fluorescent light was used as the control.The results showed that,on the condition of light intensity 23 μmol·m-2·s-1,photoperiod 14 h·d-1,and temperature（25±2）℃,red light could significantly increase the cotyledon area,the hypocotyl diameter,the starch content and the chlorophyll to carotenoid ratio of sunflower sprouts.Besides,compared with other treatments,red light could improve the content of chlorophyll a,total chlorophyll and carotenoid remarkably.Blue light obviously increased the accumulated amount of dry weight,soluble protein and the activity of POD,CAT.Yellow light could inhibit the elongation of roots,and promote the accumulation of free amino acid.Under the light of ultraviolet B,hypocotyl length and the activity of SOD,CAT were improved significantly.Overall,red light was more beneficial for the culture of sunflower sprouts.