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模拟干旱和盐碱胁迫对碱蓬、盐地碱蓬种子萌发的影响

李劲松 郭凯 李晓光 封晓辉 刘小京

李劲松, 郭凯, 李晓光, 封晓辉, 刘小京. 模拟干旱和盐碱胁迫对碱蓬、盐地碱蓬种子萌发的影响[J]. 中国生态农业学报(中英文), 2018, 26(7): 1011-1018. doi: 10.13930/j.cnki.cjea.171033
引用本文: 李劲松, 郭凯, 李晓光, 封晓辉, 刘小京. 模拟干旱和盐碱胁迫对碱蓬、盐地碱蓬种子萌发的影响[J]. 中国生态农业学报(中英文), 2018, 26(7): 1011-1018. doi: 10.13930/j.cnki.cjea.171033
LI Jinsong, GUO Kai, LI Xiaoguang, FENG Xiaohui, LIU Xiaojing. Effects of PEG, NaCl and Na2CO3 stresses on Suaeda glauca and Suaeda salsa seed germination[J]. Chinese Journal of Eco-Agriculture, 2018, 26(7): 1011-1018. doi: 10.13930/j.cnki.cjea.171033
Citation: LI Jinsong, GUO Kai, LI Xiaoguang, FENG Xiaohui, LIU Xiaojing. Effects of PEG, NaCl and Na2CO3 stresses on Suaeda glauca and Suaeda salsa seed germination[J]. Chinese Journal of Eco-Agriculture, 2018, 26(7): 1011-1018. doi: 10.13930/j.cnki.cjea.171033

模拟干旱和盐碱胁迫对碱蓬、盐地碱蓬种子萌发的影响

doi: 10.13930/j.cnki.cjea.171033
基金项目: 

国家重点研发计划课题 2016YFC0501308

中国科学院科技服务网络计划 KFJ-SW-STS-141-04-1

中国科学院科技服务网络计划 KFJ-STS-ZDTP-001-03

详细信息
    作者简介:

    李劲松, 主要从事耐盐植物生理生态研究。E-mail:lijingsongsjz@163.com

    通讯作者:

    刘小京, 主要从事缺水盐渍区水土资源高效利用研究。E-mail:xjliu@sjziam.ac.cn

  • 中图分类号: Q945.79

Effects of PEG, NaCl and Na2CO3 stresses on Suaeda glauca and Suaeda salsa seed germination

Funds: 

the National Key Research and Development Program of China 2016YFC0501308

the Science and Technology Service Network Program of the Chinese Academy of Sciences KFJ-SW-STS-141-04-1

the Science and Technology Service Network Program of the Chinese Academy of Sciences KFJ-STS-ZDTP-001-03

More Information
  • 摘要: 为研究干旱和盐碱胁迫对碱蓬(Suaeda glauca)、盐地碱蓬(Suaeda salsa)种子萌发的影响,比较碱蓬和盐地碱蓬逆境生理特性的异同,本研究利用PEG6000、NaCl和Na2CO3分别模拟干旱、盐和碱胁迫,配制相同渗透势的PEG6000、NaCl、Na2CO3处理液,以蒸馏水处理为对照,对碱蓬、盐地碱蓬种子的萌发与胚的生长进行比较研究。结果表明:1)低渗处理(-0.46 MPa)对碱蓬、盐地碱蓬种子的萌发无显著影响;高渗处理(-1.38 MPa、-1.84 MPa)抑制碱蓬、盐地碱蓬种子的萌发。2)当溶液渗透势相等时,NaCl处理下碱蓬种子的萌发率显著大于PEG、Na2CO3处理;而等渗PEG、NaCl、Na2CO3处理对盐地碱蓬种子萌发率的影响无显著差异。3)PEG、NaCl、Na2CO3处理组碱蓬、盐地碱蓬种子的最终萌发率与对照无显著差异。4)在幼苗形成阶段,PEG、Na2CO3处理对碱蓬、盐地碱蓬胚的抑制作用显著大于等渗NaCl处理。5)碱蓬、盐地碱蓬胚的生长对NaCl、Na2CO3胁迫的响应存在差异。-0.92 MPa NaCl处理抑制碱蓬胚的生长,却对盐地碱蓬产生促进作用;-0.46 MPa Na2CO3处理对碱蓬胚的抑制作用小于盐地碱蓬。综合分析表明:碱蓬、盐地碱蓬均具有很强的抗盐性。在种子萌发阶段,碱蓬种子的抗旱、抗碱能力低于盐地碱蓬;在幼苗形成阶段,碱蓬胚的抗盐性小于盐地碱蓬,但对轻度碱胁迫的抗性高于盐地碱蓬。
  • 图  1  不同渗透势PEG、NaCl和Na2CO3处理对碱蓬(A)和盐地碱蓬(B)萌发率的影响

    不同小写字母表示不用处理间0.05水平差异显著。

    Figure  1.  Effects of PEG, NaCl and Na2CO3 with different ostimotic potentials on the germination rates of Suaeda glauca (A) and Suaeda salsa (B)

    Different lowercase letters mean significant differences among treatments at P < 0.05.

    图  2  不同渗透势PEG、NaCl和Na2CO3处理对碱蓬(A)和盐地碱蓬(B)最终萌发率的影响

    不同小写字母表示不用处理间0.05水平差异显著。

    Figure  2.  Effects of PEG, NaCl and Na2CO3 with different ostimotic potentials on the final germination rates of Suaeda glauca (A) and Suaeda salsa (B)

    Different lowercase letters mean significant differences among treatments at P < 0.05.

    图  3  不同渗透势PEG、NaCl和Na2CO3处理对碱蓬(A)和盐地碱蓬(B)萌发指数的影响

    Figure  3.  Effects of PEG, NaCl and Na2CO3 with different ostimotic potentials on the germination indexes of Suaeda glauca (A) and Suaeda salsa (B)

    图  4  不同渗透势PEG、NaCl和Na2CO3处理对碱蓬(A)和盐地碱蓬(B)平均萌发时间的影响

    不同小写字母表示不用处理间0.05水平差异显著。

    Figure  4.  Effects of PEG, NaCl and Na2CO3 with different ostimotic potentials on the mean germination times of Suaeda glauca (A) and Suaeda salsa (B)

    Different lowercase letters mean significant differences among treatments at P < 0.05.

    图  5  不同渗透势PEG、NaCl和Na2CO3处理对碱蓬(A)和盐地碱蓬(B)胚轴、胚根长度的影响

    不同小写字母表示不用处理间0.05水平差异显著。

    Figure  5.  Effects of PEG, NaCl and Na2CO3 with different ostimotic potentials on the hypocotyl and radicle lengths of Suaeda glauca (A) and Suaeda salsa (B)

    Different lowercase letters mean significant differences among treatments at P < 0.05.

    图  6  不同渗透势PEG、NaCl和Na2CO3处理对碱蓬和盐地碱蓬幼苗形成的影响

    Figure  6.  Effects of PEG, NaCl and Na2CO3 with different ostimotic potentials on the seedlings establishment of Suaeda glauca and Suaeda salsa

    表  1  不同胁迫处理液的浓度、渗透势和pH

    Table  1.   Concentration, osmotic potential and pH of the treatment solutions

    处理
    Treatment
    浓度
    Concentration
    (mmol·L-1)
    渗透势
    Osmotic potential (MPa)
    pH
    对照Control 0 0 6.76
    PEG 6000 29 -0.46 6.75
    38 -0.92 6.72
    45 -1.38 6.70
    50 -1.84 6.69
    NaCl 100 -0.46 6.75
    200 -0.92 6.72
    300 -1.38 6.69
    400 -1.84 6.68
    Na2CO3 70 -0.46 11.53
    140 -0.92 11.60
    210 -1.38 11.62
    280 -1.84 11.64
    下载: 导出CSV
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  • 收稿日期:  2017-11-03
  • 录用日期:  2018-01-16
  • 刊出日期:  2018-07-01

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