目的 进行良种银杏幼苗叶质量分析。方法 采用RP-HPLC-ELSD 法测定良种银杏幼苗叶内酯含量。结果 总内酯含量,6月份高于8月份,11月份含量明显下降;嫁接苗高于实生苗,雄性高于雌性。结论 活性成分含量与生长季节、树龄、培育方式、生长环境、立地条件等诸因素有关。由主要活性成分BB 与GB 综合评价:江西良种银杏幼苗叶优于文献报道的银杏叶的质量。

Object To stuay the quality of seedling leaves cultured from improved variety of Ginkgo biloba L.. Methods The content of terpene lactones in seedling leaves of G. biloba were determined by RP-HPLC-ELSD.Results The content of total terpene lactone producted in Jun. was more than that in Aug., and it was obviously lower in Nov.. The content of terpene lactone in grafting was more than that in seedling. The content of terpene lactone in male trees was more than that in female trees.Conclusion The content of the active components was related to the season of growth, age of tree, raising modes, environment of growth, geographic conditions and others. The evaluation of the content of the main active components BB and GB showed that the quality of seedling leaves cultured from improved variety of G. biloba in Jinagxi is better than that reported by literature.