A new chalcone from the aerial roots of Ficus microcarpa

A new flavonoid with chalcone skeleton was isolated from the dried aerial roots of Ficus microcarpa. The structure of the compound was elucidated on the basis of spectral methods including 1D and 2D NMR. The new compound showed weak inhibitory effect on nitric oxide production and cytotoxicity against K562 and PC3 cells.

三种常用道路绿化植物根系生长状况研究

以黄葛树(Ficus virens var.sublanceolata)、小叶榕(Ficus microcarpa L.)和春鹃(Rhododendron pulchrum Sweet)为试验对象,通过挖取南向1 m×1 m×1 m的土壤剖面观察其根系的分布状况,发现在距树干南向1 m处,黄葛树88.1%及以上的根系主要分布于0~60 cm深的土层中,小叶榕92.0%及以上的根系主要分布于0~60 cm深的土层中,春鹃43.4%及以上的根系主要分布于0~30 cm深的土层中;3种植物的须根在石骨子碎块和砖块缝隙中可发育成扁平状或云片状,其根系结构特点更适合重庆市园林绿化土壤的现状。