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目的:对濒危高山药用植物胡黄连进行组织结构、高山环境适应性研究。方法:常规石蜡切片法和叶表皮临时制片法。结果:胡黄连多数植株地上茎不明显,极少数的植株有明显而直立的地上茎;叶片为等面叶,叶表面存在2种类型腺毛,气孔为不定式;地上茎中存在发达的机械组织,根状茎中分布有木栓层、厚角组织;叶片、地上茎、根状茎中均有大量通气组织分布。结论:胡黄连组织中存在适应高山环境的典型构造,但也有明显区别于其它高山植物的特异特征,高山植物对环境适应方式具有多样性。
Objective: To study the adaptability of the tissue structure and alpine environment of endanger mountain medicinal plant Picrorhiza. Methods: conventional paraffin section method and leaf epidermis temporary preparation method. Results: Most of the plants of Coptis were not obvious on the aerial stems, and a few of the plants had obvious and upright stems. The leaves were isosceles, there were two types of glandular trichomes on the leaf surface, and the stomatal irregularities. There were well-developed mechanical tissues and root There were cork layers and thick-angle tissues in the stems, and a large number of ventilation tissues were distributed in leaves, above-ground stems and rhizomes. CONCLUSION: There are some typical structures that adapt to the alpine environment in the Coptis tissue, but there are also some distinct characteristics that are obviously different from those of other alpine plants. The alpine plants have a variety of adaptability to the environment.