干旱区研究2011，Vol.28Issue(5)：849-853,5.
干旱半干旱地区蓼科4属植物的系统发育关系研究
Study on Phylogeny of Four Polygonaceae Genera from Arid and Semiarid Areas
摘要
Abstract
Atraphaxis,Calligonum,Parapteropyrum and Pteropyrum are all the genera of Polygonaceae distributed in arid and semiarid areas.The four genera have many similar characters in morphology.In China,Atraphaxis and Calligonum are mainly distributed in Xinjiang,and Parapteropyrum is endemic in Tibet.The genus Pteropyrum including 3-5 species can be found in Southwest Asia and Middle East.Total genomic DNA of Atraphaxis,Calligonum,Parapteropyrum and Pteropyrum was extracted from the leaves dried with silica-gel or from herbaria,the polymerase chain reaction（PCR） was used to amplify the chloroplast DNA atpB-rbcL region.The atpB-rbcL,the intergenic spacer between atpB gene and rbcL gene,about 900 bp in length,is widely used for the phylogenetic analysis on generic level.The phylogenetic tree based on the atpB-rbcL sequences reveals that Calligonum shows closer relation to Pteropyrum,additionally,Parapteropyrum is out of the clade including Calligonum,Pteropyrum and Atraphaxis.Within Calligonum,Section Calligonum,Section Medusa and Section Pterococcus formed a small clade,which is distinct from Section Calliphysa.关键词
蓼科/叶绿体基因/atpB-rbcL/系统发育/干旱区Key words
Polygonaceae/chloroplast DNA/atpB-rbcL/phylogenetic relation/arid area分类
农业科技引用本文复制引用
孙延霞,张明理..干旱半干旱地区蓼科4属植物的系统发育关系研究[J].干旱区研究,2011,28(5):849-853,5.基金项目
中国科学院新疆生态与地理研究所百人计划支持项目(0876061) （0876061）
干旱区生物地理与生物资源重点实验室资助 （）
