【摘要】 目的研究云南常见药用植物红景天的遗传背景。方法采用RAPD技术对3种6个居群59个红景天样品进行了遗传关系研究。结果大花红景天3个居群的多态位点百分率(PPB)分别为37.97%、46.15%、39.45%,Nei’s基因多样性(h)分别为0.1103、0.1437、0.1371,Shannon’s信息指数(I)分别为0.1736、0.2221、0.2067,物种水平的PPB为70.47%,I为0.2583,基因分化系数Gst为0.2630;长鞭红景天2个居群的PPB分别为43.67%、44.42%,I分别为0.2153、0.2174,物种水平的PPB为65.51%,Gst为0.3132,I为0.3139;云南红景天的PPB为36.97%,I为0.1881。结论RAPD分子标记可很好地用于红景天物种的分子鉴定和遗传背景研究。更多还原

【Abstract】 Objective To analyze the hereditary background of common species from Rhodiola L. in Yunnan Province. Methods Fifty-nine samples of six populations in three natural medicinal species from Rhodiola L. were studied by RAPD method. Results The percentage of polymorphic bands （PPB） of three populations from R. crenulata were 37.97%, 46.15%, and 39.45% respectively; the Nei’s gene diversities （h） were 0.110 3, 0.143 7, and 0.137 1, respectively; the Shannon’s information indes （I） were 0.173 6, 0.222 1, and 0.206 7, respectively; at the special level, the PPB was 70.47%, I was （0.258 3）; the genetic differentiation (G_st) was 0.263 0. The PPB of two populations from R. fastigiata were 43.67% and 44.42%, I were 0.215 3 and 0.217 4, respectively; at the special level, the PPB was 65.51%, G_st and I were 0.313 2 and 0.313 9, respectively; the PPB of R. yunnanensis was 36.97%, I was 0.188 1. Conclusion RAPD molecular marker could be used to molecular authentication and genetic diversity analysis of medicinal species from Rhodiola L.更多还原