华北农学报 ›› 2003, Vol. 18 ›› Issue (2): 33-35. doi: 10.3321/j.issn:1000-7091.2003.02.009

所属专题: 玉米 抗旱节水

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渗透胁迫对玉米幼苗水分状况及生长的影响

赵丽英, 邓西平, 山仑   

  1. 西北农林科技大学,中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨陵 712100
  • 收稿日期:2002-08-22 出版日期:2003-06-28
  • 作者简介:赵丽英(1972-), 女, 山东寿光人, 助理研究员, 在职博士, 主要从事旱地农业生理生态研究工作.
  • 基金资助:
    国家重点基础研究发展规划专项经费资助(G1999011708)

Effects of Osmotic Stress on Water Status and Growth of Maize Seedlings

ZHAO Li ying, DENG Xi ping, SHAN Lun   

  1. Northwest SciT ech University of Agriculture and Forestry, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
  • Received:2002-08-22 Published:2003-06-28

摘要: 在人工生长培养箱中,研究了PEG模拟干旱对秦单4号和陕单911两个玉米品种水分状况及生长的影响.结果表明,随着渗透胁迫的加强,叶片的RWC、水势、叶面积、根系长度以及干物质积累都降低,且抗旱性较强的秦单4号降低幅度低于抗旱性较弱的陕单911,但根冠比增加.秦单4号的叶片生长速率低于陕单911的叶片生长速率,但根系生长速率却高于陕单911,而且在渗透胁迫下秦单4号可以很快做出适应性反应,陕单911反应迟钝.

关键词: 玉米, 渗透胁迫, 水分状况, 生长

Abstract: T he effects of osmotic stress with PEG?6000 on water status and growth of maize seedlings, Qin dan No.4 and Shandan 911, were studied by water culture in artificiaLgrowth shelter.It is indicated that RWC, water potential, leaf area, root system length and dry matter accumulation would be reduced with the in crease of osmotic stress in experiment period.And the range of reduction of Qindan No.4( a drought resistant variety) is less than Shandan 911( a drought sensitive one).But R/S of them are alLincreased.The leaf expan? sion rate of Qindan No.4 was lower than that of Shandan 911, but the root growth rate is greater.Moreover, Qindan No.4 would make quick adaptation response under osmotic stress, but Shandan 911 was slower.

Key words: Maize, Osmotic stress, Water status, Growth

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引用本文

赵丽英, 邓西平, 山仑. 渗透胁迫对玉米幼苗水分状况及生长的影响[J]. 华北农学报, 2003, 18(2): 33-35. doi: 10.3321/j.issn:1000-7091.2003.02.009.

ZHAO Li ying, DENG Xi ping, SHAN Lun. Effects of Osmotic Stress on Water Status and Growth of Maize Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 33-35. doi: 10.3321/j.issn:1000-7091.2003.02.009.

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