激光生物学报, 2011, 20 (4): 462, 网络出版: 2015-10-08
光照强度对金果榄光合特性和生长品质的影响
Effect of Different Light Intensities on Photosynthetic Characteristics and Growth Quality of Tinospora capillipes Gagnep.
金果榄 光照强度 光合特性 生长 品质 Tinospora capillipes Gagnep. light intensity photosynthetic characteristics growth quality
摘要
目的: 探讨不同光照强度对金果榄植株光合特性和生长的影响。方法: 设置光照强度为自然光强的100%、52.7%、33.2%和15.8% 四种处理, 测定其光合速率等生理指标、叶绿素、生物产量及活性成分含量的变化。结果: 1.低光照强度处理的光合速率均高于 100%自然光照处理, 33.2%处理最高, 显著地高于52.7%处理和15.8%处理; 2.叶片叶绿素总量(Ch1) 、叶绿素 a (Chl a)、叶绿素 b (Chl b)、类胡萝卜素(Car) 含量随光强的减弱而增大; 3.单叶面积随光照强度的减弱而增大, 比叶重(LMA) 则随着生长光强的减弱而减小; 4.33.2%光强下金果榄块根生物量、浸出物和盐酸巴马汀最高。结论: 虽然金果榄有较强的光适应能力, 但光照过强或过弱均对其生长造成不良影响, 主要体现为光合速率降低, 块根生物量积累下降、活性成分减小等。实验结果表明, 33.2%光强是金果榄植株生长的最佳光照强度。
Abstract
Purpose: To probe the effects of different light intensities on photosunthetic characteristics and growth of Tinospora capillipes Gagnep. plant. Method: Potted Tinospora capillipes Gagnep. biennial seed tuber seedlings were grown under 100%, 52.7%, 33.2% and 15.8% of natural light intensity. Measured photosynthetic rate, chlorophyll, biomass, and the active ingredient. Result: 1.The photosynthetic rate under low light intensity treatment was higher than that under 100% of natural light intensity treatment, and the highest was under 33.2% of natural light intensity, significantly higher than those under any other light intensity treatment; 2.The contents of total chlorophyll (Chl)、chlorophyll a(Chla)、chlorophyll b (Chlb) and carotenoid (Car) of leaf increased with decreasing light intensity; 3.As the light intensity decreased, the single leaf area increased but leaf mass per area(LMA) decreased; 4.The root tuber biomass, extract and Palmatine hydrochloride were the highest under 33.2% of natural light intensity. Conclusion: Tinospora capillipes Gagnep.has a wide range of light adaptability, but its photosynthetic rate decreased when grown in either strong or weak light intensity, resulting in inhibition of growth, biomass and active ingredient. 33.2% of natural light intensity was the best light environment for plants in the current growth season.
冯世鑫, 马小军, 闫志刚, 潘丽梅, 黄曦. 光照强度对金果榄光合特性和生长品质的影响[J]. 激光生物学报, 2011, 20(4): 462. FENG Shixin, MA Xiaojun, YAN Zhigang, PAN Limei, HUANG Xi. Effect of Different Light Intensities on Photosynthetic Characteristics and Growth Quality of Tinospora capillipes Gagnep.[J]. Acta Laser Biology Sinica, 2011, 20(4): 462.