阿拉善荒漠一年生植物种子萌发特性及生态适应性分析  

Seed Germination Characteristics and Ecological Adaption of Annual Plants in Alasha Region

作　　者：张继恩 梁存柱[1] 付晓玥[1] 闫建成[1] 

机构地区：[1]内蒙古大学生态与环境科学系,呼和浩特010021

出　　处：《干旱区资源与环境》2009年第2期175-179,共5页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(30660119);内蒙古大学本科生创新基金项目资助

摘　　要：对阿拉善荒漠地区主要的一年生植物种子萌发特性和生态适应进行了测定和分析,结果表明:三芒草(Aristida adscenionis)、雾冰藜(Bassia dasyphylla)、猪毛菜(Salsola collina)的种子当年萌发率较高,均超过70%,干、冷藏处理过冬后的萌发率略有下降,但仍超过60%;狗尾草(Setaria viridis)、虎尾草(Chloris virgata)、冠芒草(Pappophorum boreale)种子当年萌发率均在15%以下,狗尾草干藏处理后萌发率下降、虎尾草、冠芒草种子干冷藏处理后,萌发率大幅度上升,表现明显的休眠后熟现象;小画眉草(Eragrostis minor)种子当年萌发率接近30%,但处理后萌发率几乎降至0;虫实(Corispermum declinatum)、灰绿藜(Chenopodium glaucum)种子各种处理的萌发率都在15%以下,特别是灰绿藜种子当年不萌发。与草原区相比,荒漠区一年生植物种子萌发率偏低,萌发进程较缓慢,表现出对荒漠气候的适应性。The germination characteristics and ecological adaption of 9 kinds of annual plants in Alashan desert region were identified and analyzed.According to the results,the germinant rate of Aristida adscenionis Bassia dasyphylla and Salsola collina was higher.The average germinant rate of the fresh seeds was more than 70%,although the percentage of the seeds with dry storage and cold storage declined a little,it was still over 60%.The germination percentage of the fresh seeds of Chloris virgata Setaria viridis a...

关 键 词：阿拉善荒漠 一年生植物 种子萌发 生态适应 

分 类 号：Q948.1[生物学—植物学]