不同光色对黄连生物碱含量的影响

Effects of Different Chromatic Lights on Contents of Alkaloids in Coptis chinensis

用同等光强(2 000lx)的彩色灯管照射黄连植株,研究不同光色(白色,红色,蓝色,绿色)处理下黄连的生长状况,测定其叶片脯氨酸、叶绿素含量,总生物产量,根茎中生物碱的含量。结果表明:红光处理的黄连叶片生长速度较快,根茎产量较高,全株总生物产量与对照没有显著差异;红光处理的脯氨酸含量低于蓝光,高于白色光;红光下生物碱含量高于白色光。红光处理有利于提高黄连的生物碱含量。

Coptis chinensis plants were irradiated by different chromatic lights （white control, red, blue and green） with the same intensity （2 000 lx） to observe the growth status. The contents of chlorophyll and prolline in the leaves, total flavonoids in the rhisome and total biomass were measured. The results showed that plants treated by red light presented the highest growth speed and higher rhizome yield, and no differences were found in total biomass with the control. The content of proline in the red light treated plants was lower than that in the blue light treated plants, and higher than that in the control. The content of total alkaloids in the plants treated with red light was higher than that in the control, indicating that red light treatment is favoralble to increase alkaloid content.