目的光强和光质对灯盏花生长与总黄酮量的影响。方法用遮阳网形成的不同光强以及不同颜色塑料膜下形成的不同光质的光照条件生境下,种植灯盏花试管苗至开花,取样测定生物量和黄酮的量。结果全光照和遮光20%生境中的植物生物量和黄酮的量明显高于遮光50%生境的植株;与无色塑料膜相比,黄、红、紫和蓝色塑料膜下平均植株的生物量均下降;无色和有色塑料膜下,蓝色膜下植株的黄酮量最高,而无色塑料膜下植株的黄酮产量最高。结论光强和光质影响灯盏花生长与总黄酮量,灯盏花在全阳光照射下植株有最高的生物量积累和黄酮产量。

Objective To study the effect of light intensity and light quality on the growth and total flavonoid accumulation of Erigeron breviscapus. Methods Young plants of E. breviscapus were planted under various color films and light intensities, their biomass and total flavonoid content were determined when plants flowered. Results The biomass and total flavonoid content of individuals under 100% and 80% sunshine were higher than those under 50% sunshine. The biomasses of plants under yellow, red, purple, or blue film were lower than those under white film. Under the blue film, the total flavonoid content of the plant was the highest; while under white film, the total flavonoid yield was the highest. Conclusion Light intensity and light quality significantly affect the growth and total flavonoid accummulation of E. breviscapus. The biomass and total flavonoid yield are the highest when under full sunshine.

国家自然科学基金项目(30360009)