Anatomical and morphological features of the vegetative organs of succulent plants regards growth conditions

Ukrainian Journal of Ecology

N.A. Kirilenko¹ 

[1] Odessa National Mechnykov University

关键词: anatomy;    stem;    leaf;    succulents;    arid habitats;   

DOI  :  10.15421/2018_243

学科分类：生物科学（综合）

来源: Alex Matsyura Publishing

【 摘 要 】

Anatomical-morphological characteristics of leaves and stems of plants of succulent typeCrassula perforataThunbg.,C. socialisSchonland (Crassulaceae),Senecio rowleyanusJacods, andS. herreianusMoritz Kurt Din. (Asteraceae) from extreme habitats were studied. Basic quantitative parameters of anatomical indices were presented. The comparative analysis of the structure of vegetative organs of succulents was carried out. Several common features, which result from adaptation to such conditions of growth (characteristic peculiarities of the external structure, weak differentiation of mesophyll, considerable development of the water-bearing tissue) and features, which distinguish the studied species (the type of leaf mesophyll, presence of trichomes, type of the stomata apparatus, the degree of the conductive system development) were registered. The species which we studied is mainly spread in arid regions with warm climate and is capable of special САМ – type of photosynthesis, which enables it to survive under conditions of water deficiency and high temperature stress. In addition, arrangement of leaves in rosette makes it possible for the latter to shadow the other ones and condense moisture near the stem base. However, it can be seen from our research that under conditions of temperate climate plants, studied by us, preserved the anatomical structure, typical of tropical representatives from xeric habitats and have similar survival strategy, which is manifested at all levels of organisation: morphological, anatomical and physiological.

【 授权许可】

CC BY