| 土壤干旱对冬小麦幼苗根系生长及生理特性的影响 |
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| 引用本文： | 单长卷,梁宗锁. 土壤干旱对冬小麦幼苗根系生长及生理特性的影响[J]. 中国生态农业学报, 2007, 15(5): 38-41 |
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| 作者姓名： | 单长卷 梁宗锁 |
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| 作者单位： | 1. 河南科技学院,新乡,453003
2. 西北农林科技大学中国科学院水利部水土保持研究所,杨陵,712100 |
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| 基金项目： | 河南科技学院校科研和教改项目 |
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| 摘 要： | 盆栽试验研究了土壤干旱对冬小麦幼苗根系生长及生理特性的影响。结果表明,随干旱胁迫的加剧,幼苗总根数、根系总长、根系体积、根系干重、根水势、根相对含水率、根系脱水速率和根系活力均降低,根冠比、饱和亏、可溶性糖含量、脯氨酸含量、质膜透性、MDA含量以及SOD、POD活性均呈增加趋势。表明干旱胁迫下冬小麦幼苗可通过改变生物量分配策略而提高根比重,并通过改变根系内部的生理变化以提高其抗旱性。
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| 关 键 词： | 土壤干旱 冬小麦 根系 生长 生理特性 |
| 收稿时间： | 2005-12-28 |
| 修稿时间： | 2006-03-09 |
Effects of soil drought on root growth and physiological characteristics of winter wheat seedlings |
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| SHAN Chang-Juan and LIANG Zong-Suo. Effects of soil drought on root growth and physiological characteristics of winter wheat seedlings[J]. Chinese Journal of Eco-Agriculture, 2007, 15(5): 38-41 |
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| Authors: | SHAN Chang-Juan and LIANG Zong-Suo |
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| Affiliation: | Henan Institute of Science and Technology, Xinxiang 453003, China;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Northwest A & F University, Yangling 712100, China |
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| Abstract: | Root growth and physiological characteristics of winter wheat under different drought conditions were studied in pot experiment.Results show that total root number,total root length,root volume,root dry weight,root water potential,root relative water content,root water loss velocity,and root activity decrease with decrease of soil water.On the other hand,root/shoot,root water saturate deficit,soluble sugar content,proline content,plasma membrane permeability,MDA content,SOD activity and POD activity increase with decrease of soil water.Thus droughtresistance of winter wheat seedlings increases by changing the biomass distribution,inner physiological characteristics,and increasing root weight ratio. |
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| Keywords: | Soil drought Winter wheat Root system Growth Physiological characteristics |
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