西安市不同空气环境下四种绿化植物叶片解剖结构特征

生物学杂志

西安市不同空气环境下四种绿化植物叶片解剖结构特征

西安建筑科技大学环境与市政工程学院，西安，710055

出版日期:2016-02-18 发布日期:2016-02-18
通讯作者: 石辉，博士，教授，博士生导师，主要从事环境生态的教学研究工作，E-mail:shihui06@126.com
基金资助:
陕西省自然科学基金重点项目（2014JZ011）;林业公益性行业科研专项（201304301-05）

The leaf anatomical structure characteristics of four greening trees from urban in Xi’an under different air environment

School of Environmental and Municipal of Engineering, XI’an University of Architecture and Technology, Xi’an, 710055，China

Online:2016-02-18 Published:2016-02-18

摘要/Abstract

摘要： 以西安市不同空气环境下4种绿化树种植物大叶女贞（Ligustrum lucidum Ait.）,小叶女贞（Ligustrum quihoui Carr.）,大叶黄杨（Euonymus japonicas Thunb.），紫叶李（Prunus ceraifera cv. Pissardii）为研究对象，采用冷冻切片和显微成像技术对叶片的解剖结构进行研究。结果表明：叶片解剖结构指标在各采样点间表现出不同程度的差异性，且栅栏组织厚度，叶片厚度，叶片组织结构紧密度在各点间差异显著；叶片厚度与栅栏组织及海绵组织的相关性较大，上角质层厚度对栅栏组织及海绵组织厚度有一定的影响；在所有解剖结构中，栅栏组织和海绵组织的变异性和可塑性较高，表明栅栏组织和海绵组织更容易对环境变化做出改变。四种绿化植物的变异系数和可塑性指数最大的为紫叶李，分别为21.9%和1.0218，表明与其余三种树种相比紫叶李的叶片在应对环境变化时更容易做出改变。

关键词: 解剖结构, 冷冻切片, 变异系数, 可塑性指数

Abstract:

The leaf anatomical structure of four greening plants such as Ligustrum lucidum Ait.，Ligustrum quihoui Carr. , Prunus ceraifera Euonymus japonicas Thunb. were researched by frozen section methods. The leaves were anatomically observed, and indexes including the thickness of upper and lower cuticle, the thickness of epidermal cell, palisade tissue thickness, spongy tissue thickness and leaf thickness were measured. At the same time, the ratio of palisade tissue to spongy tissue(P/S), the ratio of palisade tissue to leaf thickness (CTR), the ratio of spongy tissue to leaf thickness(SR) were statistically analyzed. The results are as follows: (1)Leaf anatomical structure indexes among the sampling points exhibit different degrees of difference, especially the palisade tissue, the leaf thickness and the ratio of palisade tissue to leaf thickness; (2)The Correlation analysis showed that the mesophyll tissue，including palisade tissue and spongy tissue, make a significant contribution to the leaf thickness; It was also indicated that the upper cuticle had a significantly positive correlation with palisade tissue thickness, and a significantly negative correlation with spongy tissue thickness. (3)The P/S have largest coefficient variation and plasticity index among all anatomical structures, which means the P/S is more easily to make changes for environment. The coefficient variation and plasticity index of Prunus cerasifera cv. Pissardii were respectively 21.9% and 1.0218, which is the largest one in four species. It inferred that Prunus cerasifera cv. Pissardii maybe the most variable tree species of those greening plants in different environment. cv. Pissardii.and

Key words: , anatomical structure；frozen section；coefficient variation；plasticity index

刘雄飞，石辉，昝利，王玉涛，王会霞. 西安市不同空气环境下四种绿化植物叶片解剖结构特征[J]. 生物学杂志.

LIU Xiong-fei, SHI Hui, ZAN Li, WANG Yu-tao, WANG Hui-xia. The leaf anatomical structure characteristics of four greening trees from urban in Xi’an under different air environment[J]. .