Phylogeny of Dioscorea sect. Stenophora based on chloroplast matK, rbcL and trnL-F sequences

doi:10.3724/SP.J.1002.2008.08007

J Syst Evol ›› 2008, Vol. 46 ›› Issue (3): 315-321.DOI: 10.3724/SP.J.1002.2008.08007 cstr: 32099.14.SP.J.1002.2008.08007

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Phylogeny of Dioscorea sect. Stenophora based on chloroplast matK, rbcL and trnL-F sequences

¹Xing GAO, ²Yu-Ping ZHU, ¹Bao-Cheng WU, ¹Ya-Mei ZHAO, ²Jian-Qun CHEN^*, ¹Yue-Yu HANG^*

¹(Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Jiangsu Province Key Laboratory for Plant Ex Situ Conservation, Nanjing 210014, China)

²(Department of Biology, Nanjing University, Nanjing 210093, China)
hangyueyu@21cn.com (Hang Y-Y); chenjq@nju.edu.cn (Chen J-Q)

Received:2008-01-21 Published:2008-05-18

Abstract

Abstract: Seventeen species, one subspecies and one variety of Dioscorea sect. Stenophora Uline were investigated for their phylogenetic relationships based on a sequence analysis of chloroplast matK and rbcL genes and trnL-F intergenic spacer by maximum parsimony and maximum likelihood methods. The results showed that: (a) sect. Stenophora was a strongly supported monophyletic group; (b) D. rockii, D. membranacea, D. banzhuana, and D. simulans formed a moderately supported monophyletic group, and D. prazeri was weakly supported to be sister to this group; (c) D. althaeoides and D. nipponica ssp. nipponica formed a moderately supported clade, and D. nipponica ssp. rosthornii was not a member of this clade; (d) D. zingiberensis and D. sinoparviflora showed a moderate to strong sister relationship; and (e) D. collettii var. hypoglauca and D. collettii var. collettii were sister to each other, but with only weak support.

Key words: chloroplast DNA sequence, Dioscorea sect. Stenophora, maximum likelihood, maximum parsimony, molecular phylogeny

Xing GAO, Yu-Ping ZHU, Bao-Cheng WU, Ya-Mei ZHAO, Jian-Qun CHEN, Yue-Yu HANG. Phylogeny of Dioscorea sect. Stenophora based on chloroplast matK, rbcL and trnL-F sequences[J]. J Syst Evol, 2008, 46(3): 315-321.

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URL: https://www.jse.ac.cn/EN/10.3724/SP.J.1002.2008.08007

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Phylogeny of Dioscorea sect. Stenophora based on chloroplast matK, rbcL and trnL-F sequences

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