作 者 ：ZOU Yu-Ping, CAI Mei-Lin, WANG Zi-Ping
期 刊 ：植物分类学报 1999年 3期
Keywords:RAPD,
Abstract:
Plants in Paeonia sect. Moutan DC., whose wild types are endemic to China, are
deciduous subshrubs. Taxonomic treatments of most species in this section have long been in
dispute. To address this question, both intraspecific and interspecific relationships of the
species in this section were analyzed using RAPD markers. The dendrogram constructed by
UPGMA showed that the accessions of the same species were always grouped together earlier
than those of different species. The intraspecific similarity coefficients ranged from 0.60 to
0.90, grouping precisely those species of the same subsection together. Hence, the seven
species under question can be well distinguished from each other. The similarity coefficient
between P. delavayi and P. ludlowii was 0.60, and they were clustered in a clade. The
similarity coefficients between P. jishanensis and the three species P. rockii, P. ostii, P.
qiui, and between P. jishanensis and P. decomposita were both 0.48. These five species
were clustered in another clade. These two clades corresponded well to Subsect. Delavayanae
and Subsect. Vaginatae. Our results support the taxonomic treatment of Sect. Moutan re-
cently proposed by Hong (1998,1997).