摘要
[目的]探讨裸果木适应旱生环境的结构特征,为裸果木的研究提供基础资料。[方法]应用石蜡切片法对2个不同生境的裸果木进行叶片解剖学研究。[结果]与生长在水分条件较好的裸果木相比较,生长在干旱生境的裸果木叶片解剖结构具有以下特征:①叶面积显著减少;②叶表皮细胞厚度和角质层厚度均增加,后者不显著;③栅栏组织细胞排列更紧密;④主脉维管束的面积及其在叶片组织结构中的比例增加。[结论]裸果木旱生环境的解剖特征使其可以更好地适应旱生环境。
[Object] The basic information of Gymnocarpos przewalskii Maxim.Was provided through the research on the leaf structure characetristics of Gymnocarpos przewalskii Maxim.With the adaptable for the grown under arid environment.[Method] The leaf anatomy structure of Gymnocarpos przewalskii from two arid environmental conditions was researched by the method of paraffin section.[Results]Compare with growing in the environmental condition of better water,the leaf anatomy characteristic of that in arid environmental condition was as follows : ① the leaf area of cross section decrease obviosely;② the thickness of epidermal cells increase obviosely and the thickness of horny layer increase;③the cells of palisade tissue become more compacter and the percentage of palisade tissue in leaf blade increase a lot;④ the area of vascular in main vein and it spercentage in leaf blade incease incease a lot in order to its conveying efficient,and the percentage of palisade tissue in leaf increased.[Conclusion] The structure characteristics of the Gymnocarpos przewalskii Maxim.Showde it was with the better adaptability for the arid enviroment.
出处
《安徽农业科学》
CAS
北大核心
2011年第7期3929-3931,共3页
Journal of Anhui Agricultural Sciences
基金
国家科技基础条件平台建设子项目(2005DKA21006)
新疆生产建设兵团塔里木盆地生物资源保护利用重点实验室开放基金(BR0710)
关键词
裸果木
叶片
解剖结构
生态适应性
Gymnocarpos przewalski Maxim.
Leaf
Anatomical structure
Ecological adaptability