Phylogeny and maternal donor of Roegneria and its affinitive genera （Poaceae： Triticeae） based on sequencedata for two chloroplast DNA regions （ndhF and trnH-psbA）  

作　　者：Ying-Xia Lei Jia Liu Xing Fan Li-Na Sha Yi Wang Hou-Yang Kang Yong-Hong Zhou Hai-qin Zhang 

机构地区：[1]Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China [2]Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China

出　　处：《Journal of Systematics and Evolution》2018年第2期105-119,共15页植物分类学报（英文版）

基　　金：The authors are very grateful to the American National Plant Germplasm System for kindly providing seeds with PI in this study. The research was funded by the National Natural Science Foundation of China （Nos. 31670331, 31671688, and 31670387） and the Science Education Bureau of Sichuan and Technology Bureau and Province, China.

摘　　要：Roegneria C. Koch is a relatively large polyploid perennial genus with 13o species in the Triticeae, and consisting of the St and Y genomes. There are different opinions about whether Roegneria is an independent genus, or whether it should be included in the genus Elymus L. For many species of Roegneria, their genome constitution and phylogenetic relationship are still unknown. More research about the maternal genome donor of the Roegneria species is needed. To investigate the phylogenetic relationships and maternal genome donor of Roegneria and its affinitive genera, phylogenetic analyses of two chloroplast regions ndhF and trnH-psbA sequences were carried out in this study. The results showed that： （i） Campeiostachys Drobow （StYH） and all Roegneria （STY, StStY） species were scattered with Pseudoroegneria A. Love （St） species; （ii） R. sinica Keng, R. schugnanica （Nevski） Nevski, R. seriotina Keng, and Elymus calcicolus （Keng） A. Love containing the St genome;（iii） there was differentiation among species of Pseudoroegneria; and （iv） the St genome in diploid, tetraploid, and hexaploid species are divergent. Thus, it is suggested that： （i） Pseudoroegneria served as the maternal genome donor of Roegneria, including four species with unknown genomic constitutions （R. sinica, R. schugnanica, R. seriotina, and E. calcicolus）; （ii） species of Roegneria or Pseudoroegneria might serve as the maternal genome donor of Campeiostachys; and （iii） the St genome has undergone differentiation during polyploidization in diploid, tetraploid, and hexaploid species.Roegneria C. Koch is a relatively large polyploid perennial genus with 13o species in the Triticeae, and consisting of the St and Y genomes. There are different opinions about whether Roegneria is an independent genus, or whether it should be included in the genus Elymus L. For many species of Roegneria, their genome constitution and phylogenetic relationship are still unknown. More research about the maternal genome donor of the Roegneria species is needed. To investigate the phylogenetic relationships and maternal genome donor of Roegneria and its affinitive genera, phylogenetic analyses of two chloroplast regions ndhF and trnH-psbA sequences were carried out in this study. The results showed that： （i） Campeiostachys Drobow （StYH） and all Roegneria （STY, StStY） species were scattered with Pseudoroegneria A. Love （St） species; （ii） R. sinica Keng, R. schugnanica （Nevski） Nevski, R. seriotina Keng, and Elymus calcicolus （Keng） A. Love containing the St genome;（iii） there was differentiation among species of Pseudoroegneria; and （iv） the St genome in diploid, tetraploid, and hexaploid species are divergent. Thus, it is suggested that： （i） Pseudoroegneria served as the maternal genome donor of Roegneria, including four species with unknown genomic constitutions （R. sinica, R. schugnanica, R. seriotina, and E. calcicolus）; （ii） species of Roegneria or Pseudoroegneria might serve as the maternal genome donor of Campeiostachys; and （iii） the St genome has undergone differentiation during polyploidization in diploid, tetraploid, and hexaploid species.

关 键 词：Campeiostachys Elymus maternal donor NDHF ROEGNERIA trnH-psbA. 

分 类 号：Q945.11[生物学—植物学] O471.3[理学—半导体物理]