目的 進行良種銀杏幼苗葉質(zhì)量分析。方法 采用RP-HPLC-ELSD 法測定良種銀杏幼苗葉內(nèi)酯含量。結果 總內(nèi)酯含量,6月份高于8月份,11月份含量明顯下降;嫁接苗高于實生苗,雄性高于雌性。結論 活性成分含量與生長季節(jié)、樹齡、培育方式、生長環(huán)境、立地條件等諸因素有關。由主要活性成分BB 與GB 綜合評價:江西良種銀杏幼苗葉優(yōu)于文獻報道的銀杏葉的質(zhì)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.