中文摘要：

Ammopiptanthus nanus 是一危及常绿树对中亚和戏的沙漠地方性的灌木在推迟进一步的 desertification 的一个重要角色。我们在 A 检验了紧密相联的酶变化和 AFLP 差异。nanus 人口并且为多态的紧密相联的酶 loci 用子孙数组 assayed 调查了这种的交配系统。在 Keyi'eryongke'er 人口交配系统分析显示出 out-crossing，和强壮的使 \O 近交消沉的底层。基因变化的底层在人口被检测(紧密相联的酶， P _p =14.0% ， A= 1.14， H _e = 0.031；AFLP， P _p =14.5% ，香农的信息索引 I= 0.063 ) 并且种类(紧密相联的酶， P _p =21.1% ， A= 1.21， H _e = 0.040；AFLP， P _p =20.9% ， I= 0.083 ) 层次；当中等基因区别在人口之中存在，由紧密相联的酶显示了时 G _圣 = 0.081 ) 并且 AFLP (G _圣 = 0.151 0.193 ) 。创始人效果，进化历史上的瓶颈，混合交配系统和合作祖先可能在 A 影响了基因差异的水平。nanus。两种类型的标记为保存管理提供新卓见，显示 Biao'ertuokuoyi 和 Keyi'eryongke'er 人口应该被给优先级为在 situ 保存并且为前 situ 认为是种子来源保存。

英文摘要：

Ammopiptanthus nanus is an endangered evergreen shrub endemic to the deserts of central Asia and plays an important role in delaying further desertification. We examined allozyme variation and AFLP diversity in A. nanus populations and investigated the mating system of this species using progeny arrays assayed for polymorphic allozyme loci. Mating system analysis in the Keyi＇eryongke＇er population showed low levels of outcrossing, and strong inbreeding depression. Low levels of genetic variation were detected at both population （allozyme, Pp=14.0%, A=l.14, He=0.031; AFLP, Pp=14.5%, Shannon＇s information index I=0.063） and species （allozyme, Pp=21.1%, A=1.21, He=0.040; AFLP, Pp=20.9%, I=0.083） levels; while moderate genetic differentiation existed among populations, as indicated by allozymes （Gsa-=0.081） and AFLP （GST=0.151-0.193）. Founder effect, bottlenecks in evolutionary history, the mixed mating system and co-ancestry may have influenced the level of genetic diversity in A. nanus. Markers of both types provide new insights for conservation management, indicating that the Biao＇ertuokuoyi and Keyi＇eryongke＇er populations should be given priority for in situ conservation and regarded as seed sources for ex situ conservation.