草地学报 ›› 2023, Vol. 31 ›› Issue (9): 2740-2747.DOI: 10.11733/j.issn.1007-0435.2023.09.018

• 研究论文 • 上一篇    下一篇

12个草地早熟禾品种幼苗耐盐性分析

叶文兴, 张胜男, 刘雪婷   

  1. 内蒙古农业大学草原与资源环境学院, 草地资源教育部重点实验室, 内蒙古 呼和浩特 010011
  • 收稿日期:2023-05-06 修回日期:2023-08-09 出版日期:2023-09-15 发布日期:2023-10-07
  • 通讯作者: 叶文兴,E-mail:ywxing07@163.com
  • 作者简介:叶文兴(1984-),男,汉族,甘肃陇南人,博士,讲师,主要从事牧草、草坪草抗性机制和育种研究,E-mail:ywxing07@163.com
  • 基金资助:
    内蒙古自治区高等学校科学技术研究项目(NJZZ21012);内蒙古自治区科技计划项目(2020GG0127)资助

Analysis on Salt Tolerance of 12 Poa pratensis Varieties at Seedling Stage

YE Wen-xing, ZHANG Sheng-nan, LIU Xue-ting   

  1. College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Key Laboratory of Grassland Resources of the Ministry of Education, Hohhot, Inner Mongolia 010011, China
  • Received:2023-05-06 Revised:2023-08-09 Online:2023-09-15 Published:2023-10-07

摘要: 本试验以12个草地早熟禾(Poa pratensis L.)品种作为材料,测定和分析了不同NaCl浓度溶液处理幼苗的根长、叶片的叶绿素含量、相对电导率、相对含水量四个生理指标,进而对草地早熟禾的耐盐性开展了综合评价。结果表明:12个草地早熟禾品种叶绿素含量、根长和相对含水量随着NaCl浓度的增加呈下降趋势;'踏春''探险家''斗士''蓝精灵''如意''蓝之梦''水星''午夜''爱娃'相对电导率差异不显著;'奔腾'和'迪瓦'随着盐浓度增加,相对电导率呈上升趋势;0和100 mmol·L-1NaCl处理时,'奔腾'耐盐性状表现最优,200和300 mmol·L-1NaCl处理时,'洁妮''探险家''午夜'耐盐性状表现最优。'水星'在4个NaCl浓度处理的耐盐性状均表现较差。

关键词: 草地早熟禾, 盐胁迫, 生理指标, 耐盐性

Abstract: In this study,12 varieties of Poa pratensis were used as experimental materials,four physiological indicators,that is root length,chlorophyll content,relative electrical conductivity,and relative water content of the seedlings of those varieties were measured under different concentrations of NaCl stress. In order to preliminary investigate and screen out the varieties of Poa pratensis with a good salt tolerance,the salt tolerance of tested varieties of P. pratensis was comprehensively evaluated through the membership function analysis. The results showed that the chlorophyll content,root length and relative water content of 12 bluegrass varieties showed a decreasing trend with the increase of salt concentration;there was no significant difference in relative conductivity between ‘Taecun’‘Explorer’‘Fighter’‘Smurfs’‘Ruyi’‘Blue Dream’‘Mercury’‘Midnight’ and ‘Eva’. As the salt concentration increases,the relative conductivity of ‘Pentium’ and ‘Diva’ showed an upward trend. When treated with 0 and 100 mmol·L-1 NaCl,‘Pentium’ showed the best salt tolerance traits,and when treated with 200 and 300 mmol·L-1 NaCl,‘Jenny’‘Explorer’ and ‘Midnight’ showed the best salt tolerance traits. ‘Mercury’ showed a poor salt tolerance under four concentrations of NaCl stress.

Key words: Poa pratensis, Salt stress, Physiological index, Salt tolerance

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