干旱区生态环境知识资源中心

Cynomorium songaricum Rupr. is a parasitic plant and its most common host is Nitraria tangutorum Bobr. which grows in desert areas. To support the sustainable use and conservation of C songaricum, genetic and phytochemical studies were undertaken on 16 different populations. Samples were analyzed using inter-simple sequence repeat (ISSR) markers and, high performance liquid chromatography (HPLC)-fingerprinting. Total phenolic acids were determined by UV spectrophotometry. At the population level, percentage of polymorphic bands (PPB) ranged from 29.89 to 64.94%, Nei’s genetic diversity index (H) ranged from 0.0931 to 0.2055, Shannon’s information index (I) ranged from 0.1422 to 0.3140. 16 populations were classified into four chemotypes according to HPLC-fingerprinting analysis. Total phenolic acids contents ranged from 56.79 to 123.50 mg g(-1). The results of the genetic and chemical studies are used to suggest a planting and conservation system for C songaricum. (C) 2012 Elsevier Ltd. All rights reserved.