作 者 ：Hu Mei, Xiao Pei-Gen
期 刊 ：植物分类学报 1992年 3期
Keywords:Rhododendron L, Flavonoids, Quantitative analysis,
Abstract:
Analysis of 16 flavonoids and 3 other phenols in 177 samples of the genus
Rhododendron was carried out by HPTLC silica gel plate-stepwise development and
polyamide thin layer. The result reveals that the presence of monoglycosides of quercetin is a
general character of flavonoids in the Chinese rhododendrons; some taxa are characterized by
presence or absence of certain glycosides; although myricetin, and gossypetin are generally
rare in this genus, they are concentrated in some taxa, and therefore they are valuable in
chemotaxonomy. The significance of quantitative and semi-quantitative assessment of chem-
ical characters for chemotaxonomy of Rhododendron is also discussed.