摘要
对桂林毛村岩溶区与非岩溶区檵木叶片显微结构和钙形态进行了分析.结果表明,岩溶区与非岩溶区檵木叶片在宽度和厚度、气孔分布频率、上表皮细胞大小和栅栏组织厚度等方面存在显著差异,岩溶区檵木叶片呈现出旱生结构特征;叶片钙形态分布的主要差异在于酸溶态和残渣态,岩溶区檵木叶片钙含量高达29679.75mg/kg,残渣态钙含量是非岩溶区的31.2倍.推测残渣态主要沉积在细胞壁和胞间层基质中,加固了细胞壁,并限制了细胞分裂.
The effect of the limestone soil in karst area and the red soil in nonkarst lamina morphological anatomy of Loropetalum chinense was studied, and the calcium area, on the speciation in leaves of Loropetalum chinense was analyzed. The resuhs showed that： （ 1 ） the lamina morphological characteristics of Loropetalum chinense under two kinds of site condition in vitro are quite different in the leaf thickness, stomatal aparatus, densities of epidermal-cell, thickness of cutin. Loropetalum chinense is xeromorphy in karst arae; （2） leaves of Loropetalum chinense in karst area contain calcium up to 29 679.75 mg/kg more than that in nonkarst area, and more calcium is stored in cell wall and extracellular matrix. It is presumed that the excess calcium in the leaves from the karst area contributs to the stiffness of the cell wall and this restrained cell division.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2008年第3期412-416,共5页
Journal of Xinyang Normal University(Natural Science Edition)
基金
广西省自然科学基金项目(桂科自0640208)
广西科技厅创新能力建设项目(桂科能05112001-8A)
关键词
岩溶
檀木
显微结构
钙
形态分析
karst
Loropetalum chinense
lamina anatomical structure
Ca
speciation
