Plant Diversity ›› 2010, Vol. 32 ›› Issue (S17): 46-54.

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Phylogeny of Diplaziopsis and Homalosorus Based on Two Chloroplast DNA Sequences: rbcL and rps4+rps4trnS IGS

 WEI  Ran-1、2, ZHANG  Xian-Chun-1, QI  Xin-Ping-1、2、3   

  1. 1 State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences,
    Beijing 100093, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai 201602, China
  • Online:2010-12-25 Published:2011-01-28


Phylogenetic relationships and systematic positions of Diplaziopsis and Homalosorus were investigated by using two chloroplast DNA regions (rbcL and rps4+rps4trnS). All the members of these two genera, 25 species representing other related groups and three outgroups were included in the combined analyses of chloroplast DNA sequence data sets which are performed with Maximum Parsimony, Maximum Likelihood and Bayesian Inference methods. The topologies of gene trees revealed that: 1) Diplaziopsis and Homalosorus form a monophyletic group with high bootstrap value; 2) Diplaziopsis and Homalosorus are not nested in Athyriaceae; 3) Diplaziopsis and Homalosorus show a parallel phylogenetic relationship with Dryopteridaceae and Aspleniaceae. On the basis of combined DNA data sets analyses and morphological characters, Diplaziopsis and Homalosorus are proposed to be treated as a family with close relation to Aspleniaceae.

Key words: Diplaziopsis, Homalosorus, Phylogenetic relationships, Chloroplast DNA sequences

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