Sources of sugar in flowers and fruits of Macrocarpium officinale during fruiting / 中草药

Object To study the source of sugar in flowers and fruits of Macrocarpium officinalis (Sieb et Zucc.) Nakai during fruiting.Methods The sugar contents were analyzed by HPLC.Results The contents of glucose, fructose and total sugar decreased slowly in the third or the forth branch after the barks were cyclically cut and there were significant differences between test group and control group, the changes of sugar contents in the first or the second branch were similar to control group.Conclusion These sugars in flowers and fruits were provided by the first or the second branch during fruiting.