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ACTA HORTICULTURAE SINICA ›› 2011, Vol. 38 ›› Issue (12): 2387-2394.

• Research Notes • Previous Articles     Next Articles

A Molecular Phylogeny of Sorbus(Rosaceae)Based on ITS Sequence

WANG Guo-xun1,2 and ZHANG Ming-li1,3,*   

  1. (1Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;2Graduate University of Chinese Academy of Sciences,Beijing 100039,China;3Key Laboratory of Biogeography and Bioresource in Arid Land,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China)
  • Received:2011-08-12 Revised:2011-11-16 Online:2011-12-25 Published:2011-12-25
  • Contact: ZHANG Ming-li

Abstract: The systematic circumscription of Sorbus has remained unresolved because of hybridization and polyploidy. To reconstruct the phylogeny of Sorbus,we sequenced the nuclear ribosomal DNA ITS region of 46 species of the genus and outgroups species Cotoneaster multiforus,Cotoneaster horizontalis,Exochorda racemosa,Rosa hugonis and Cerasus glandulosa. The phylogenetic relationships among 43 species of Sorbus were investigated by means of maximum parsimony(MP),maximum likelihood(ML)and bayesian inference(BI)analyses. The results revealed that the genus Sorbus is monophyletic;Subg. Aria,Subg. Micromeles and Subg. Sorbus were not monophyletic,respectively;The circumscription between unifoliate group and multifoliate group is unclear. The results are not in accordance with the previous morphological classification.

Key words: Sorbus L., phylogeny, ITS

CLC Number: