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草业学报 ›› 2009, Vol. 18 ›› Issue (2): 33-39.

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水分胁迫对结缕草种群特征和生理特性的影响

王齐1,孙吉雄1,安渊2*   

  1. 1.甘肃农业大学草业学院,甘肃 兰州 730070;
    2.上海交通大学农业与生物学院, 上海 201101
  • 收稿日期:2008-04-07 出版日期:2009-04-20 发布日期:2009-04-20
  • 作者简介:王齐(1975-),男,甘肃秦安人,在读博士。E-mail: wangqi0213@yahoo.com.cn
  • 基金资助:
    上海市农委四新项目[沪农科推字(2004)第2-1-6号]资助。

The effect of the population properties and stress-tolerance physiological characteristics of Zoysia grass under water stresses

WANG Qi1, SUN Ji-xiong1, AN Yuan2   

  1. 1.College of Prataculture, Gansu Agriculture University, Lanzhou 730070, China;
    2.College
    of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 201101, China
  • Received:2008-04-07 Online:2009-04-20 Published:2009-04-20

摘要: 采用大田试验,研究了“JD-1”结缕草在水分胁迫下的种群特征和生理特性变化。结果表明,水分胁迫能明显抑制结缕草的生长发育,结缕草也能通过自身生理生化调节来减弱由水分胁迫带来的伤害。在水分胁迫下,水分胁迫区结缕草密度、株高和生物量低于无水分胁迫区,且随水分胁迫的增加而明显降低。结缕草叶片相对电导率、游离脯氨酸含量和丙二醛含量在无水分胁迫区随试验期的延长呈缓慢增大的趋势;而在轻度和重度水分胁迫区随水分胁迫时间的延长呈波动状变化。复水期内结缕草密度、株高和生物量明显增大,水分胁迫区密度和生物量明显大于无水分胁迫区;结缕草叶片相对电导率、游离脯氨酸含量和丙二醛含量明显低于无水分胁迫区,且轻度和重度水分胁迫区各指标值差异不显著。

Abstract: The population properties and stress-tolerance physiological characteristics of Zoysia japonica under 3 levels of water stress (none, light, and heavy), were studied in a field experiment. Zoysia growth was restricted by water stress, but it had a physiological and biochemical self-adjustment mechanism to reduce the damage caused by water stress. The density, height and biomass of Zoysia declined as the stress increased. Relative conductivity, proline content and MDA content of Zoysia leaves gradually increased in conditions of no water stress while the response trend of wavy change was found when both light and heavy water stress were present. Density, height and biomass of Zoysia increased during the recovery phase. Both density and biomass of Zoysia a grown in areas of water stress were higher than those in areas with no water stress, and the relative conductivity, proline content and MDA content of the Zoysia leaves were also lower. There were no significant differences in any of the indexes between light water stress and heavy water stress.

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