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草业学报 ›› 2013, Vol. 22 ›› Issue (4): 123-129.DOI: 10.11686/cyxb20130415

• 研究论文 • 上一篇    下一篇

不同盐胁迫对白三叶种子萌发及幼苗生长的影响

卢艳敏,苏长青,李会芬   

  1. 衡水学院生命科学系,河北 衡水053000
  • 出版日期:2013-08-20 发布日期:2013-08-20
  • 作者简介:卢艳敏(1977-),女,河北冀州人,副教授,博士。E-mail:hsxylym@sina.com
  • 基金资助:
    衡水市科学技术研究指导计划项目(08067Z)资助。

Effects of different salts stress on seed germination and seedling growth of Trifolium repens

LU Yan-min, SU Chang-qing, LI Hui-fen   

  1. Department of Life Science, Hengshui University, Hengshui 053000, China
  • Online:2013-08-20 Published:2013-08-20

摘要: 采用不同浓度的NaCl、Na2CO3、Na2SO4溶液以及NaCl和Na2CO3 的混合液,NaCl、Na2CO3和Na2SO4的混合液对白三叶种子进行胁迫处理,每个处理3个重复,测定白三叶种子的发芽率、发芽势、发芽指数、活力指数以及幼苗根长和苗高等指标。结果表明,与对照相比,随着NaCl、Na2CO3以及NaCl和Na2CO3 混合液浓度的增加,白三叶的发芽率、发芽势、发芽指数、活力指数及幼苗的根长和苗高均呈下降趋势。随着Na2SO4及NaCl、Na2CO3和Na2SO4混合液浓度的增加,白三叶种子的发芽率、发芽势、发芽指数、活力指数呈先上升后下降趋势,幼苗的根长和苗高呈下降趋势。白三叶种子对不同类型盐的耐受性各异,对NaCl、Na2CO3、Na2SO4的耐受浓度阈值分别为300 mmol/L,100 mmol/L,150 mmol/L。

Abstract: The experiment was conducted to study the germination rate, germination power, germination index, vigor index of Trifolium repens seeds treated with different concentrations solution of NaCl, Na2CO3, Na2SO4, mixed salt of NaCl and Na2CO3, mixed salt of NaCl, Na2CO3 and Na2SO4, there were three replicates for each treatment. With the increasing of salt concentration of NaCl, Na2CO3, mixed solution of NaCl and Na2CO3, germination rate, germination power, germination index, vigor index of T. repens seeds all decreased, the restrained degree on growth of root and seedling was increasing obviously, with the increasing of salt concentration of Na2SO4, mixed solution of NaCl, Na2CO3 and Na2SO4, germination rate, germination power, germination index, vigor index of T. repens seeds first increased and then decreased, the growth of root and seedling decreased. T. repens seeds tolerance threshold to NaCl, Na2CO3, Na2SO4 was 300 mmol/L, 100 mmol/L, 150 mmol/L respectively.

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