BACKGROUND: Echinacea purpurea (L.) Moench is in increasing demand worldwide owing to its medicinal value, resulting from the combined effects of several phytochemicals. In the present study, the polymerase chain reaction-amplified randomly amplified polymorphic DNA (RAPD) markers generated from 45 pre-selected primers were used to predict the contents of total phenol, caffeoyl phenol and alkamide 8+9 (alkamide 8+ alkamide 9) in aerial parts of 70 E. purpurea accessions through stepwise regression analysis. The contents of these phytochemicals were also analyzed chemically.
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