Plant Diversity ›› 2009, Vol. 31 ›› Issue (02): 117-126.DOI: 10.3724 SP.J.1143.2009.08206

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Bayesian Inference of nrDNA ITS Sequences from Machilus (Lauraceae) and Its Systematic Significance

CHEN Jun-Qiu1 , 2 , LI Lang1 , 2 , LI Jie1, LI Hsi-Wen3   

  1. 1 Laboratory of Plant Phylogenetics and Conservation Biology, Xishuangbanna Tropical Botanical Garden , Chinese Academy of Sciences,
    Kunming 650223 , China ; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 3 Herbaium, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204 , China
  • Received:2008-11-18 Online:2009-04-25 Published:2009-04-25
  • Contact: LI Jie

Abstract: The phylogeny of the genus Machilus was analysed by means of Bayesian Inference of nrDNA ITS sequences. Our results indicated that Machilus is a monophyletic clade within the Persea group, and its persistent and spreading to reflexed tepals on fruit are an important character for its generic delimitation against the related genera Phoebe , Alseodaphne and Persea . This study rejects the former infrageneric systematic arrangement of Machilus based on the pubescence type of tepals abaxially and the size of fruit , but suggests that the type of inflorescences may be valuable for the understanding of its infrageneric evolution . However , the species relationships within Machilus are poorly resolved . Samplings of additional taxa from Machilus and more powerful markers are needed in further study .

Key words: Lauraceae

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