Phylogenetic origin of Beckmannia (Poaceae) inferred from molecular evidence  

作　　者：Chong-Mei XU Chang-You QU Wen-Guang YU Xue-Jie ZHANG Fa-Zeng LI 

机构地区：[1]Weifang Medical University, Weifang 261053, China [2]College of Life Sciences, Shandong Normal University, Jinan 250014, China [3]Shandong Drug and Food Vocational College, Weihai 264400, China [4]Shandong Shengli Co. Ltd., Jinan 250101, China

出　　处：《Journal of Systematics and Evolution》2009年第4期305-310,共6页植物分类学报（英文版）

基　　金：supported b ythe National Natural Science Foundation of China(30270107);the Project Sponsored by the Scientific Research Foundation for the Doctors,Weifang Medical University

摘　　要：The phylogenetic origin of Beckmannia remains unknown. The genus has been placed within the Chlorideae, Aveneae （Agrostideae）, Poeae, or treated as an isolate lineage, Beckmanniinae. In the present study, we used nuclear internal transcribed spacer （ITS） and chloroplast trnL-F sequences to examine the phylogenetic relationship between Beckmannia and those genera that have assumed to be related. On the basis of the results of our studies, the following conclusions could be drawn： （i） Beckmannia and Alopecurus are sister groups with high support; and （ii） Beckmannia and Alopecurus are nested in the Poeae clade with high support. The results of our analysis suggest that Beckmannia should be placed in Poeae.The phylogenetic origin of Beckmannia remains unknown. The genus has been placed within the Chlorideae, Aveneae （Agrostideae）, Poeae, or treated as an isolate lineage, Beckmanniinae. In the present study, we used nuclear internal transcribed spacer （ITS） and chloroplast trnL-F sequences to examine the phylogenetic relationship between Beckmannia and those genera that have assumed to be related. On the basis of the results of our studies, the following conclusions could be drawn： （i） Beckmannia and Alopecurus are sister groups with high support; and （ii） Beckmannia and Alopecurus are nested in the Poeae clade with high support. The results of our analysis suggest that Beckmannia should be placed in Poeae.

关 键 词：Aveneae Beckmannia internal transcribed spacer （ITS） PHYLOGENY POEAE trnL-F. 

分 类 号：Q554.7[生物学—生物化学] Q949.714.2