摘要
本文利用生物显微技术对阿拉善地区的 9种旱生或超旱生珍稀濒危植物的地上营养器官 (茎、叶 )进行了形态及内部结构观察。研究发现 ,这些植物均表现出一系列适应干旱贫瘠环境的形态结构特征 ,如叶趋于小型化 ;多数有较厚的角质层及发达的表皮附属物 (表皮毛、角质突起 ) ;叶肉组织趋于栅栏化 ,9种植物中 ,3种为全栅型 ,3种环栅型 ,3种正常型 ;机械组织发达 ;植物体普遍存在黏液细胞和含晶细胞。
The structure and morphology of stems and leave of the nine species(Tetraena mongolica,Potaninia mongolica,Prunus mongolica,Ammopipanthus mongolicus,Haplophyllum tragacanthordes,Leptodemis ordosia,Helianthemum soogoricum,Syringa pinnatifolia var holanshanensis,Hippolytia alaschanensis)which are all xerophyte or super xerophyte,and have been classified as national or Inner Mongolia priority protective plants were described in this paper The results showed that the leave of these plants tend to become smaller and develop thick cuticle and lush epidermis hairs;The palisade tissue are highly developed,among the nined species,the mesophylls in Potaninia mongolica,Prunus mongolica and Ammopipanthus mongolicus are full palisade type,Tetraena mongolica,Haplophyllum tragacanthordes and Hippolytia alaschanensis are ring palisade type and Leptodemis ordosia,Helianthemum soogoricum and Syring pinnatifolia var holashanensis are nomal type;In the stems and the leave of these plants,mucilage cells and crystal cells are found being everywhere and mechanical tissues are also well developed These forml and structural characters showed a highly adaptation to dry and infertility
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2000年第3期65-71,共7页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
国家自然科学基金项目! (39960 0 55)
