文献类型：期刊文献

中文题名：NaCl胁迫对紫穗槐幼苗生长及生理特性的影响

英文题名：Effects of NaCl Stress on the Growth and Physiological Characteristics of Amorpha fruticosa Seedlings

作者：王涛[1] 蒙仲举[1] 张佳鹏[1] 雷虹娟[2] 张格[3]

第一作者：王涛

机构：[1]内蒙古农业大学沙漠治理学院,内蒙古呼和浩特010018;[2]包头市达茂旗民安镇综合保障和技术推广中心,内蒙古达茂旗014500;[3]中国林业科学研究院沙漠林业实验中心,内蒙古磴口015200

年份：2021

卷号：36

期号：1

起止页码：25-30

中文期刊名：西北林学院学报

外文期刊名：Journal of Northwest Forestry University

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：内蒙古自治区科技重大专项:重点区域荒漠化过程与生态修复研究与示范(zdzx2018058~3);内蒙古自治区第十届“草原英才”(PC201907220608)。

语种：中文

中文关键词：紫穗槐;NaCl胁迫;生长指标;生理指标

外文关键词：Amorpha fruticosa;NaCl stress;growth index;physiological index

分类号：S728.5

摘要：为进一步探讨紫穗槐幼苗对NaCl胁迫的适应机制,选取1年生紫穗槐幼苗为供试材料,采用盆栽灌浇盐水控制土壤盐含量的方法进行胁迫处理,设计NaCl含量分别达到土壤干重的0.1%、0.3%、0.5%、0.7%4个梯度,以不作任何处理作为对照(CK),研究不同浓度NaCl胁迫下紫穗槐幼苗的生长与生理指标变化。结果表明,随着土壤盐浓度的增加,紫穗槐幼苗的株高生长量、分枝长度生长量、基径生长量及叶片相对含水量均呈下降趋势,紫穗槐幼苗叶片的叶绿素含量、抗逆性酶活性及可溶性蛋白质含量呈先上升后下降的趋势。0.1%土壤盐浓度下叶绿素含量出现峰值,SOD活性及可溶性蛋白质含量在0.3%土壤盐浓度下出现峰值,POD活性在0.5%土壤盐浓度下出现峰值。总体上,紫穗槐幼苗可以适应0.1%~0.3%的NaCl胁迫,表现出一定的耐盐性。
In order to understand the adaptive mechanism of Amorpha fruticosa seedlings under different NaCl stress concentrations,annual seedlings of A.fruticosa were used as materials,the potted experiment was designed to control NaCl contentration(0%,the control,0.1%,0.3%,0.5%,and 0.7%of the soil dry weight).The changes of the seedling growth and physiological indexes under the stress were analyzed.The results showed that with the increase of NaCl concentration,the growths of seedling height,branch length,basal diameter,and relative water content decreased gradually.The chlorophyll content,stress-resistant enzyme activity,and soluble protein content in the leaves increased first and then decreased.The chlorophyll content reached the peak value under 0.1%salt concentration.The SOD enzyme activity and soluble protein content peaked under 0.3%salt concentration.The POD enzyme activity peaked under 0.5%salt concentration.Overall,A.fruticosa seedlings could adapt to 0.1%-0.3%soil salt concentration stress,and presented a certain tolerance to NaCl stress.