安徽农业科学2017，Vol.45Issue(21)：1-3,8,4.
不同生态环境下水曲柳的解剖结构差异分析
Difference Analysis of Anatomic Structure of Fraxinus mandschurica Rupr in Different Ecological Environments
摘要
Abstract
[Objective] To explore the Fraxinus mandshurica Rupr evolution of different internal anatomical characteristics in the shade environment and sun environment.[Method] Employing paraffin-section method,wood segregation technology,unarmed slice method and optical micrograph technology,we performed a comparative study on the structure of petiole,leaf,timber and xylem vessel of Fraxinus mandshurica in the two kinds of circumstances respectively.[Result] In the shade environment,its cuticle of petiole and leaf was underdeveloped,and aerenchyma mesophyll cells were developed.Spongy tissue was underdeveloped,and palisade tissue was sparse.The diameter of vessel elements and smaller and stomatal sparse,showed the structure characteristic of tolerance of shade environment.In the sun environment,its petiole and leaf showed the tangential wall corneous layer thickening,mesophyll cells were small and compact.The layer number of palisade tissue was more.Spongy tissue was dense.It could refract light intensity effectively in order to avoid leaf burns.Vascular tissue was developed.Vessel diameter was bigger,and made the ability of transport strengthen.These were the unique structure of the plant in order to adapt to the drought environment.[Conclusion] The results provide theoretical support for further exploring the rivalry adversity of plant and anatomical structure,and confirm the plant internal and external morphology is closely related to the environment.关键词
阴生植物/阳生植物/水曲柳/解剖结构Key words
Shade plant/Heliophyte/Fraxinus mandshurica/Anatomical structure分类
农业科技引用本文复制引用
王晓钰,陈丹萍,徐光照,李岩,陆静梅..不同生态环境下水曲柳的解剖结构差异分析[J].安徽农业科学,2017,45(21):1-3,8,4.基金项目
国家自然科学基金项目:(41271231). （41271231）
