干旱区生态环境知识资源中心(Arid): 干旱胁迫对细穗柽柳幼苗生长和生理生化指标的影响

Arid

	干旱胁迫对细穗柽柳幼苗生长和生理生化指标的影响
其他题名	Growth and Physiological Index of Tamarix leptostachys Bunge Seedlings Under Soil Drought Stress
	胡杨; 李钢铁; 李星; 贾守义
来源期刊	中国农业科技导报
ISSN	1008-0864
出版年	2021
卷号	23 期号:6 页码:43-50
中文摘要	为探讨细穗柽柳耐旱机制,采用盆栽试验,以2 a生细穗柽柳幼苗为材料,分析了不同干旱胁迫程度对细穗柽柳幼苗生长和生理指标的影响。结果表明:细穗柽柳幼苗生长受干旱胁迫后,植株高度和地径生长速率降低;叶片相对含水率和叶绿素含量随着干旱胁迫程度提高逐渐降低;叶片相对电导率、丙二醛、脯氨酸、可溶性蛋白和可溶性糖含量均呈上升趋势;叶片超氧化物歧化酶和过氧化物酶活性也呈上升趋势,过氧化氢酶活性先增强后下降。综上所述,细穗柽柳幼苗在干旱胁迫下能通过调节自身的酶活性及渗透调节物质含量来缓解干旱胁迫造成的伤害,表现出较强的抗旱能力,适宜在干旱地区种植和推广。
英文摘要	In order to study the mechanism of drought-resistance in Tamarix leptostachys Bunge,this paper took the seedlings of Tamarix leptostachys Bunge with 2 a panicles as materials,and measured the growth and physiological traits of Tamarix leptostachys Bunge seedlings under different drought stresses.The results showed that:the growth of Tamarix leptostachys Bunge seedlings was inhibited by drought stress,including plant height and ground diameter,and its growth rate decreased gradually.The relative water content,water potential and chlorophyll a/b content in leaf gradually decreased with the increase of drought stress,while the relative electrical conductivity,malondialdehyde,proline,soluble protein and soluble sugar in leaves increased significantly.The activity of superoxide dismutase and peroxidase in leaf of Tamarix leptostachys Bunge seedlings showed an increasing trend,and the activity of catalase first increased and then decreased.To sum up,drought stress had significantly affected activities of protective enzymes and content of osmotic adjustment substances in Tamarix leptostachys Bunge seedlings.So Tamarix leptostachys Bunge could be planted and popularized in dry areas due to high drought resistance.
中文关键词	细穗柽柳 ; 干旱胁迫 ; 生长 ; 生理生化指标
英文关键词	Tamarix leptostachys Bunge drought stress growth physiological and biochemical index
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:6989234
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/379045
作者单位	胡杨, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 李钢铁, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 李星, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 贾守义, 巴彦淖尔市林业科学研究所, 巴彦淖尔, 内蒙古 015000, 中国.
推荐引用方式 GB/T 7714	胡杨,李钢铁,李星,等. 干旱胁迫对细穗柽柳幼苗生长和生理生化指标的影响[J],2021,23(6):43-50.
APA	胡杨,李钢铁,李星,&贾守义.(2021).干旱胁迫对细穗柽柳幼苗生长和生理生化指标的影响.中国农业科技导报,23(6),43-50.
MLA	胡杨,et al."干旱胁迫对细穗柽柳幼苗生长和生理生化指标的影响".中国农业科技导报 23.6(2021):43-50.