THE CHANGES OF NITRATE REDUCTASE (NR) ACTIVITY AND PROTEIN CONTENT OF CHINESE PANAX GINSENG LEAVES AND ROOTS CULTIVATED UNDER DIFFERENT LIGHT QUALITIES
不同光质下栽培人参硝酸还原酶(NR)活性和蛋白质含量的变化

The effects of light qualities on the Nitrate Reductase (NR) activity and protein content of Chinese Panax ginseng were investigated. The results are as follow:The NR activity in leaves and roots was the highest at preblossom stage and declined as the roots matured and the leaves senesced. The NR activity in leaves was higher than that in roots. The soluble protein and the total protein nitrogen contents in leaves were reduced from the highest value at preblossom stage to the lowest at maturation stage, while that in roots were quite the reverse.The NR activity, soluble protein and total protein nitrogen contents in the leaves and roots cultivated were the highest under blue light membrane; and relatively lower under red or green light membranes. It is possible to increase NR activity and soluble protein content in leaves and roots by increasing the blue light component in red or red-green light membranes.The above results showed that in Ginseng cultivation increase of blue light is beneficial to the nitrogen metabolism.