鳞毛蕨科植物的系统发育_叶绿体rbcL序列的证据.pdf

植 物 分 类 学 报 44 (5): 503–515 (2006) doi:10.1360/aps050081 Acta Phytotaxonomica Sinica 鳞毛蕨科植物的系统发育: 叶绿体rbcL序列的证据 1 2 李春香 陆树刚 1( 中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室 南京 210008) 2(云南大学生态学与地植物学研究所 昆明 650091) Phylogenetic analysis of Dryopteridaceae based on chloroplast rbcL sequences 1 2 LI Chun-Xiang LU Shu-Gang 1(State Key Laboratory of Palaeobiology and Stratigraphy of Nanjing Institute of Geology and Palaeontology, the Chinese Academy of Sciences, Nanjing 210008, China) 2(Institute of Ecology and Geobotany, Yunnan University, Kunming 650091, China) Abstract Dryopteridoid ferns are distributed all over the world, but China and its adjacent regions have the highest species diversity, so China is a key region to study their phylogenetic relationships and evolutionary history. In this study, chloroplast rbcL sequences from 105 species of Dryopteridaceae and their relative lineages were used to reconstruct the phylogenetic trees using the MEGA2 and MrBayes 3.0b4 software. The phylogenetic relationships were inferred using the neighbor-joining, maximum-parsimony and Bayesian analysis, and three methods produced trees with largely congruent topology. These trees reveal that: (1) the species of the Dryopteridaceae in the classification of Ching except for those in Cyclopeltis are divided into two monophyletic groups corresponding to the two tribes, Dryopterideae Ching and Polys