RELATIONS OF LIGHT QUALITIES WITH AMYLASE ACTIVITY, CONTENTS OF CARBOHYDRATE AND STARCH IN PANAX GINSENG
光质与人参淀粉酶活性、总糖和淀粉含量的关系

By investiging seasonal variations under differenx light qualities with the same transmisson rate (25% of sun light), we found that the amylase activity, the content of carbohydrate and starch in Ginseng leaves were higher than those in roots from June to Sept. In leaves, amylase activity was the highest in red fruit period, while content of carbohydrate and starch were the most in mature period. On the contrary, in roots amylase activity was the highest in the mature period, while carbohydrate and starch were the most in red fruit period. The amylase activity, content of carbohydrate and starch in Ginseng leaves and roots under red, red-blue and red-blue-green light (compound light) were higher than those under green light and blue light. Red light is of great advantage to the synthesis and accumulation of carbohydrate, but the compound light (red-blue and red-blue-green light) are more advantageous to the Ginseng growth.