草地学报

草地学报 ›› 2017, Vol. 25 ›› Issue (3): 662-665.DOI: 10.11733/j.issn.1007-0435.2017.03.031

• 研究专报 • 上一篇    下一篇

NaCl和Na2CO3胁迫对同德老芒麦种子萌发及幼苗生长的影响

石玉龙2, 徐隆华1,3, 窦声云2, 山发华4, 李长慧4, 王芳萍1,3, 姚步青1, 周华坤1   

  1. 1. 中国科学院西北高原生物研究所青海省寒区恢复生态学重点实验室, 青海 西宁 810008;
    2. 青海省铁卜加 草原改良试验站, 青海 共和 813000;
    3. 中国科学院大学, 北京 100049;
    4. 青海大学农牧学院, 青海 西宁 810016
  • 收稿日期:2016-01-20 修回日期:2016-08-25 出版日期:2017-06-15 发布日期:2017-08-29
  • 通讯作者: 徐隆华
  • 作者简介:石玉龙(1965-),男,青海西宁人,畜牧(草原)师,研究方向为牧草栽培育种,E-mail:tiebujiacaoye@126.com
  • 基金资助:

    国家自然基金面上项目（31572354，31472135）；青海省应用基础研究计划项目（2015-ZJ-711）；青海省重点实验室发展专项（2014-Z-Y01）；海南州2015年度州级科技合作项目计划（2015-HZ-01）；国家科技支撑计划专题（2014BAC05B03）；国家自然科学青年基金（31500427）；中国博士后基金（2015M582735）资助

Effects of NaCl and Na2CO3 Stress on Seed Germination and Seedling Growth of Elymus sibiricus ‘Tong de’

SHI Yu-long2, XU Long-hua1,3, DOU Sheng-yun2, SHAN Fa-hua4, LI Chang-hui4, WANG Fang-ping1,3, YAO Bu-qing1, ZHOU Hua-kun1   

  1. 1. Key Laboratory of Restoration Ecology in Cold Region of Qinghai Province, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;
    2. Tiebujia Grassland Improvement Experiment Station, Gonghe, Qinghai Province 813000, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province 810016, China
  • Received:2016-01-20 Revised:2016-08-25 Online:2017-06-15 Published:2017-08-29

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摘要：

采用室内培养法观察了不同浓度的NaCl及NaCl+Na2CO3混合溶液胁迫条件下‘同德’老芒麦（Elymus sibircus ‘Tong de’）种子的发芽率及胚根和胚芽的生长状况。结果表明，Na+浓度为15 mmol·L-1时，NaCl+Na2CO3胁迫下发芽率显著高于对照。随着各种盐溶液浓度的升高，胚根的生长均呈下降趋势，因此可以用胚根的生长长度来判断‘同德’老芒麦种子萌发对盐的抗性强弱。

关键词: 盐胁迫, ‘同德’老芒麦, 萌发率, 胚根

Abstract:

The seed germination rate, radicle and plumule growth of Elymus sibiricus ‘Tong de’ were observed under different content ratio of NaCl and NaCl+Na2CO3 solution in the lab. The results showed that as the concentration of Na+ was 15 mmol·L-1, the seed germination rate was higher with NaCl+Na2CO3 stress than control significantly. The growth of radicle decreased with the increase of various concentration of salt solution. Therefore the growth length of radicle of Elymus sibiricus ‘Tong de’ could be used to determine salt resistance of seed germination.

Key words: Salt stress, Elymus sibiricus ‘Tong de’, Germination rate, Radicle

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