南京林业大学学报（自然科学版）Issue(6)：51-55,5.DOI:10.3969/j.issn.1000-2006.2015.06.010
比拉底白刺苗期抗旱性分析
Drought resistance analysis of Nitraria billardieri seedlings
摘要
Abstract
The drought resistance research of Australia desert plants Nitraria billardieri was focused by observing mor⁃phological changes and analyzing variation trends of relative water content ( RWC ) , enzymatic activity of peroxidase ( POD) , malondiadehyde ( MDA) , and proline( Pro) under drought stress simulated by 100 mmol/L mannitol solution. The results showed that the leaves turned yellow under drought stress and withered gradually from base to top, presuma⁃bly by protecting the vitality of buds to adapt the arid environments. The relative water content kept relatively stable at early stage and then decreased gradually. The POD activity increased slowly at first and then increased rapidly. Free Pro concentration had been rising during the treatment. MDA content increased at first and then decreased. According to the statistical analysis, both POD and free Pro increased obviously compared with control group. They reduced plasma mem⁃brane peroxidation and kept the cell integrity which showed drought resistance of Nitraria billardieri. MDA concentration did not change significantly, this indicated that cytoplasmic membrane system was protected and did not seriously suffer from reactive oxygen free radical attacking under drought stress probably caused by increased concentration of POD and free Pro.关键词
比拉底白刺苗/生理指标测定/抗旱性分析Key words
Nitraria billardieri seedling/physiological indexes determination/drought resistance analysis分类
农业科技引用本文复制引用
鲁路,张景波,陈金慧,周艳威,成铁龙..比拉底白刺苗期抗旱性分析[J].南京林业大学学报（自然科学版）,2015,(6):51-55,5.基金项目
国家自然科学基金项目（31270707）；中国林业科学研究院基本科研业务费专项项目（ CAFYBB2011001）；国家林业局“948”引进项目 （）
