三种生境角果藜茎叶的解剖结构及生态适应

对三种生境角果藜的解剖结构进行了观察和研究,结果表明:角果藜茎随着环境的干旱其维管束组织趋于发达,甚至形成了附加维管束;叶的栅栏组织和海绵组织的比例随环境的干旱逐渐增大,体现了向节约型发展的适应趋势。这些结构的变异可以使植株更好地进行物质合成和运输,使之在生长季节,能快速生长,并且能更好地避免高温、强光、干旱所造成的损伤。

The Anatomical Structure of Ceratocarpes Arenarius and Its Adaptation to Three Pieces of Environment

The anatomical structure of Ceratocarpes arenarius in three habitats has been observed and studied.The results showed that:the vascular organizations of Ceratocarpes arenarius stem tends to develop along with the increasing drought in environment,and even formed a subsidiary vascular bundle;the proportion of leaf palisade and spongy tissue also gradually increased with the the reduction of water.The suitability of Ceratocarpes arenarius leaves belongs to the conservation-oriented type.These variations structure may be better transport production so that it can fast grow,and be able to avoid the heat,high light,the damage caused by the drought in the growing season.