6种灌木叶片解剖结构的抗旱性分析

Analyisis of Drought Resistance on Anatomical Structure of Leave of Six Species of Shrubs

选择叶片厚度、气孔密度等14项叶片旱性结构指标对柠条锦鸡儿(Caragana korshin-skii)、沙木蓼(Atraphaxis bracteata)、蒙古岩黄芪(Hedysarum mongolicum)、花棒(Hedysarum sco-parium)、互叶醉鱼草(Buddleja alternifolia)、四翅滨藜(Atriplex canescens)等6种灌木5月份的生长叶片进行了解剖结构观测,依据可比性、可测性、变异性及相关性等原则筛选出3项在反映6种灌木基于叶片解剖结构的抗旱能力上具有代表性的指标上表皮细胞层厚度、叶片厚度和气孔密度,并应用隶属函数值法对6种灌木的抗旱性大小进行了排序,结果为:花棒>沙木蓼>蒙古岩黄芪>四翅滨藜>柠条锦鸡儿>互叶醉鱼草。

Anatomical structures of the leaves of 6 shrubs collected in May were observed by using 14 drought resistant indexes, such as leaf thickness and stoma density. According to the principles of comparability, measurability and variability, 3 indexes, i. e. , top epidermis thickness, leaf thickness and stoma density were selected to represent drought resistance based on leaf anatomical structure. An order of drought resistance of 6 shrubs was given by using subordinate function value analysis ： Hedysarum scoparium 〉 Atraphaxis bracteata 〉 Hedysarum mongolicum 〉 Atriplex canescens 〉 Caragana korshinskii 〉 Buddleja alternifolia.