短葶飞蓬总黄酮含量变化研究

目的 研究短葶飞蓬总黄酮含量与生长发育和月份变化的关系，环境与遗传因素对总黄酮含量的决定作用。方法 测定同一月份不同生长发育期、同一生长发育期不同月份短葶飞蓬的总黄酮含量的器官分布，阳生和阴生生境下短葶飞蓬的总黄酮含量，不同花色短葶飞蓬的总黄酮含量。结果 短葶飞蓬的总黄酮主要分布于地上部分，而地上部分的总黄酮含量以盛花期员高，谢花期最低。4～6月盛花期短葶飞蓬各器官的总黄酮含量月份变化不显著。光照强度对短葶飞蓬总黄酮含量影响不大。短葶飞蓬的花色不能作为总黄酮含量的选择标记，遗传因素对个体间总黄酮含量差异起重要作用。结论 通过遗传育种提高短葶飞蓬总黄酮含量的前景是广阔的。

Study on variation of total flavonoids in Erigeron breviscapus

Object To study the variation of total flavonoids in Erigeron breviscapus (Vant.) Hand.-Mazz. with the development periods, the months, the affection of the environment and genetical factors on the total flavonoids. Methods The total flavonoids in organs of E. breviscapus during the different deve-lopment periods and the months were determined. The total flavonoids of E. breviscapus in the sunny and shady habitats and the total flavonoids of E. breviscapus with different colors were compared. Results The total flavonoids of E. breviscapus mainly existed in the ground part. The total flavonoids of E. breviscapus are the highest in its flourishing period, and the lowest in its withering period. The variety of the total flavonoids in every organs of E. breviscapus in flourishing period from April to June was not significant. Illumination intensity had little affection to the total flavonoids of E. breviscapus. The colors of E. breviscapus flowers could not be the selected markers for the total flavonoids. The genetic factor played an important role in deciding the difference of the total flavonoids among the individuals. Conclusion It will be optimistic to improve the total flavonoids in E. breviscapus by genetic breeding.