干旱区生态环境知识资源中心(Arid): 黄土高原3种优势种对干旱胁迫的生理响应及其抗旱性评价

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	黄土高原3种优势种对干旱胁迫的生理响应及其抗旱性评价
其他题名	Responses and Drought Resistance of Three Dominant Species to Soil Water Stress from Loess Hilly Region
	田冑; 左小容; 梁宗锁
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2011
卷号	26 期号:6 页码:18-23
中文摘要	研究了在适宜水分、中度干旱和重度干旱3种土壤水分条件下，黄土高原干旱、半干旱地区 3种分布广泛的优势种白花草木樨(Melilotus albus)、沙柳(Salix cheilophila)和花棒(Hedysarum scoparium)对土壤干旱胁迫的生理响应，并对其抗旱性进行综合性评价。结果表明：随着土壤水分胁迫加剧，3种植物相对含水量和离体叶片保水力均下降；SOD、CAT、POD活性及MDA、超氧阴离子、可溶性蛋白含量均升高。3种植物的抗旱性顺序为花棒>沙柳>白花草木樨。
英文摘要	Physiological variations and drought resistance were studied of three dominant species, Melilotus alba, Salix cheilophila and Hedysarum scoparium exposed to different soil water contents (75%, 55%, and 35 %, respectively). Responses to the droughts of the three species were evaluated by monitoring variations of the relative water content (RWC) ,the water preserving capacity, the activities of protective enzyme (SOD, CAT, and POD respectively),the contents of malondialdehyde (MDA), the contents of superoxide anion and the soluble protein content. The results showed both RWC and the water preserving capacity of the three species decreased as the increase of draught stress. The activities of protective enzymes, the content of MDA, superoxide anion and the soluble protein increased in varying degrees. Taking all these indices into consideration and using the subjection function analysis, the capacity of drought resistance of three dominant species can be evaluated as follows: Hedysarum scoparium>Salix cheilophila >Melilotus alba.
中文关键词	优势种 ; 抗旱性 ; 隶属函数法 ; 综合评价
英文关键词	dominant species drought resistance subordinate function comprehensive evaluation
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:4315372
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378727
作者单位	田冑, 西北农林科技大学生命科学学院, 杨陵, 陕西 712100, 中国.; 左小容, 西北农林科技大学生命科学学院, 杨陵, 陕西 712100, 中国.; 梁宗锁, 西北农林科技大学生命科学学院, 杨陵, 陕西 712100, 中国.
推荐引用方式 GB/T 7714	田冑,左小容,梁宗锁. 黄土高原3种优势种对干旱胁迫的生理响应及其抗旱性评价[J],2011,26(6):18-23.
APA	田冑,左小容,&梁宗锁.(2011).黄土高原3种优势种对干旱胁迫的生理响应及其抗旱性评价.西北林学院学报,26(6),18-23.
MLA	田冑,et al."黄土高原3种优势种对干旱胁迫的生理响应及其抗旱性评价".西北林学院学报 26.6(2011):18-23.