沙拐枣幼枝解剖结构及其生态适应性  

Anatomical Structures of Young Stems of Calligonum mongolicumand Its Ecological Adaptabilities

作　　者：刘明珍[1] 刘秀珍[2] 周忠泽[3] 孙伟[3] 

机构地区：[1]皖西学院材料与化工学院.,安徽六安237012 [2]巢湖学院体育系,安徽巢湖238000 [3]安徽大学生命科学学院安徽省生态工程与生物技术重点实验室,安徽合肥230039

出　　处：《北方园艺》2014年第16期17-19,共3页Northern Horticulture

基　　金：国家自然科学基金资助项目(30670151)

摘　　要：以沙拐枣为试材,对其幼枝和茎进行了解剖学观察和研究,同时辅以泡果沙拐枣的茎的解剖学研究为对照,以期探讨沙拐枣的生态适应性。结果表明：沙拐枣的幼枝和茎的解剖结构显著不同,沙拐枣作为新疆荒漠植被中防风固沙的优良植物,其幼枝解剖结构已随环境发生特化,具有1~2层呈栅栏组织状排列的细胞,1层为海绵组织状排列的细胞,皆具叶绿体,皮层内含有粘液细胞等,表明沙拐枣长期对干旱、高温生境的适应,促使其更为强烈地分化出旱生结构,因而具有明显的生态适应性。Taking Calligonum mongolicum as materials, anatomical structures of stems and young stems were examined for a better understanding of the ecological adaptability,and in the meanwhile C. junceum＇s anatomical structures of stems were examined as a control. The results showed that anatomical structures of young stems was different from its stems. （2. mongolicurn was an excellent plants in Xinjiang desert vegetation in windbreak and sand fixation. Anatomical structures of young stems had changed with the environment specialized,it has 1-2 layer cells which was arranged in the shape of palisade tissue,a layer was arranged in the shape of the cells in the spongy tissue. Both of them had chloroplast and containing mucus cells in the cortex. The special ization of anatomical structure in C. mongolicum reflected the adaptation to special habitat of drought, high temperature environment, and this enabled a plant to differentiate strongly into xeromorphic structure. Therefore,it is of obvious significance in ecological adaptability.

关 键 词：沙拐枣 幼枝 解剖结构 生态适应性 

分 类 号：S665.1[农业科学—果树学]