title: Effects of environmental factors on genetic diversity ofCaragana microphyllain Horqin Sandy Land, northeast China.
abstract: Caragana microphylla(Leguminosae) is a dominant climax semishrub species in northern China. We evaluated genetic variation within and among populations sampled from three different environmental gradients in Horqin Sandy Land in northern China using intersimple sequence repeats markers and investigated the possible existence of relationships between genetic diversity and environmental factors. The results showed thatC. microphyllahave high genetic diversity, and environmental gradients affected genetic diversity ofC. microphyllapopulations. Genetic diversity of all populations was affected by many environmental factors and as well correlated with warm index and soil Olsen phosphorus (SOP) concentration. These results have important implications for restoration and management of these degraded ecosystems in arid and semi-arid areas.
authors.affiliation: Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou China.
authors.forename: Wenda
authors.initials: W
authors.lastname: Huang
authors.affiliation: Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou China.
authors.forename: Xueyong
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou China.
authors.forename: Yulin
authors.initials: Y
authors.lastname: Li
authors.affiliation: Northwest Institute of Eco-Environment and Resources Chinese Academy of Sciences Lanzhou China.
authors.forename: Jie
authors.initials: J
authors.lastname: Lian
keywords: Caragana microphylla; Horqin Sandy Land; environmental factors; genetic diversity; intersimple sequence repeat