Structural Characteristics and Eco-adaptability of Heteromorphic Leaves of Populus euphratica

编号 zgly0000362556

文献类型 期刊论文

文献题名 Structural Characteristics and Eco-adaptability of Heteromorphic Leaves of Populus euphratica

学科分类 220.99;林学其他学科

作者 LiZhao-xia  ZhengCai-xia 

作者单位 CollegeofBiologicalSciencesandBiotechnology  BeijingForestryUniversity  Beijing100083  P.R.China 

母体文献 Forestry Studies in China;中国林学: 英文版 

年卷期 2005,7(1)

页码 11-15

年份 2005 

分类号 S792.11 

关键词 杨  生态适应性  完全变态叶片  显微结构  超微结构  表层结构 

文摘内容 The microstructural and ultrastructural traits of three kinds of typical leaves ofPopulus euphratica Olive, including lanceolate, broad-ovate and dentate broad-ovate leaves, were studied by using electron microscope and optical microscope. The resuits showed that with the leaves changing from lanceolate shape to dentate broad-ovate shape, their structure obviously tended to be xeromorph: developed palisade tissue, undeveloped spongy tissue, thick cutin layer and sunken stomas. The amount of mitochondria tended to be increased, and the shape of chloroplasts varied from regular spindle to irregular rotundity or oval. The leaves were covered with wax without cilium, and the stomas on the upper and lower epidermis of the leaves opened unevenly. The stomas on the lower epidermis were deeper than those on the upper epidermis under the scanning electron microscope. The results implied that the structural characteristics of the diversiform-leaves ofP euphratica are related to its eco-adaptability。