摘要
采用模拟长时期干旱的控水盆栽方法处理6种固沙灌木的幼苗,在水分胁迫的不同时间测定叶片质膜透性,结果表明这些树种的叶片质膜透性均随土壤含水量的下降而增大。分析质膜透性变化特征,可见重度干旱的影响明显高于中度干旱。6种灌木相对都能适应中度干旱。毛条(Caragana korshinskii)、沙木蓼(Atraphaxis bracteata)、四翅滨藜(Atriplex canescens)的抗旱性较强,醉鱼草(Buddleja alternifolia)较弱,杨柴(Hedysarum mongolicum)、花棒(H.Scoparium)居于两类之间。
The seedlings of six sand - fixing shrubs were grown in the pots whose soil moisture contents were controlled by weighing to simulate suitable condition, moderate drought, and severe drought for long period, and leaf cell membrane permeability was determined at different time under water stress. The results showed that the leaf cell membrane permeability of every species was raised as soil moisture content was declined. Through analyzing the characteristics of changed membrane permeability it might be seen that the effect of severe drought was evidently heavier than that of moderate drought. They all could relatively adapt to moderate drought. Caragana korshinskii, Atraphaxis bracteata and Atriplex canescens would be with strong drought resistance while Buddleja alternifolia would be with weak drought resistance. Hedysarum mongolicum and H. scoparium would be intermediate in drought resistance.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2013年第6期38-42,共5页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
国家林业局重点科研项目(2003-066-L66)
陕西省林业厅科研计划项目
杨凌职业技术学院科学研究基金计划项目(A2013010)
关键词
固沙灌木
水分胁迫
质膜透性
抗旱性
Sand -fixing shrub
water stress
cell membrane permeability
drought resistance
