| 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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| 引用本文： | 田胄,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].西北林学院学报,2011,26(6):18-23. |
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| 作者姓名： | 田胄 左小容 梁宗锁 |
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| 作者单位： | 西北农林科技大学 生命科学学院，陕西 杨陵712100 |
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| 基金项目： | 中国科学院重要方向项目资助(KZCX2-YW-443); 科技部“十一五”支持计划(2008BAD98B08) |
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| 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。
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| 关 键 词： | 优势种 抗旱性 隶属函数法 综合评价 |
Responses and Drought Resistance of Three Dominant Species to Soil Water Stress from Loess Hilly Region |
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| TIAN Zhou,ZUO Xiao-rong,LIANG Zong-suo.Responses and Drought Resistance of Three Dominant Species to Soil Water Stress from Loess Hilly Region[J].Journal of Northwest Forestry University,2011,26(6):18-23. |
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| Authors: | TIAN Zhou ZUO Xiao-rong LIANG Zong-suo |
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| Institution: | College of Life Sciences, Northwest A&F University, Yangling,Shaanxi 712100,China |
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| Abstract: | 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 s... |
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| Keywords: | dominant species drought resistance subordinate function comprehensive evaluation |
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