植物化石表皮构造研究新方法  

A new technique to decipher the epidermal structure of plant fossils

作　　者：谭笑[1] 孙革[1,2] 张宜[1] 

机构地区：[1]沈阳师范大学古生物学院,沈阳110034 [2]吉林大学东北亚生物演化与环境教育部重点实验室,长春130026

出　　处：《世界地质》2013年第4期659-664,共6页World Geology

基　　金：教育部与国家外专局"111"项目(B06008)

摘　　要：在辽西中侏罗世松柏类植物研究中,一种新的表皮构造分析技术得到了使用。该技术首先用化学方法清除化石叶表面的杂质,而后分别用超景深显微镜和扫描电镜(SEM)对表皮构造进行观察,最后用揭片技术分析普通表皮细胞和气孔等特征。研究结果表明,该松柏类叶的普通表皮细胞、气孔器构造和气孔带分布等均与红杉(Sequoia)相似。此方法克服了传统的揭片方法往往出现模糊不清或范围有限等缺陷,为分析研究植物化石枝叶表皮构造开辟了一条可供选择的新途径。A new technique for deciphering the epidermal structure of conifers collected from the Middle Ju- rassic of western Liaoning, China, is introduced. The technique is stepped in process by removing contamination on surfaces of fossil leaves with chemical treatment at first, applying the optical microscope with large depth of field and SEM for observing the stomatal bands, then using cellulose peel technique in the＇ specimens to observe. The result clearly shows that the epidermal structure of conifers appears to be similar with of Sequoia in stomatal bands and stomatal apparatus. The new method overcomes the shortcoming of images unclear remained in the traditional cellulose peel technique, and provides a new referred approach for analyzing the epidermal structure of fossil leaves and leafy shoots.

关 键 词：松柏类 表皮构造 化学方法 超景深显微镜 SEM 揭片技术 

分 类 号：Q914.3[天文地球—古生物学与地层学]