Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2025, Vol. 33 ›› Issue (9): 2854-2862.DOI: 10.11733/j.issn.1007-0435.2025.09.010

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Effects of Combined Saline and Alkaline Stress on Seed Germination of Six Wild Agropyron mongolicum Keng Populations

YANG Dong-sheng1,2,3, BAO Gerile1, WANG Le-le1, LIU Che1, GUO Li-ping4, AN Qi5, HAO Shui-yuan1,2,3   

  1. 1. Department of Agronomy, Hetao College, Bayannur, Inner Mongolia 015000, China;
    2. Laboratory of the Green Agricultural Product Safety Production and Early Warning Control in Hetao Area, Bayannur, Inner Mongolia 015000, China;
    3. Technological Innovation Center for Durum Wheat, Bayannur, Inner Mongolia 015000, China;
    4. Forestry and Grassland Comprehensive Security Center of Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia 010020, China;
    5. Rural Revitalization Promoiological Pesticidetion Center of Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia 010011, China
  • Received:2024-09-04 Revised:2025-01-20 Online:2025-09-15 Published:2025-09-22

复合盐碱胁迫对6个野生蒙古冰草居群种子萌发的影响

杨东升1,2,3, 宝格日乐1, 王乐乐1, 刘澈1, 郭利平4, 安琪5, 郝水源1,2,3   

  1. 1. 河套学院农学系, 内蒙古 巴彦淖尔 015000;
    2. 河套地区绿色农产品安全生产与预警控制实验室, 内蒙古 巴彦淖尔 015000;
    3. 硬质小麦技术创新中心, 内蒙古 巴彦淖尔 015000;
    4. 内蒙古自治区林业和草原综合保障中心, 内蒙古 呼和浩特 010020;
    5. 内蒙古自治区乡村振兴促进中心, 内蒙古 呼和浩特 010011
  • 通讯作者: 郝水源，E-mail：haoshuiyuan@126.com
  • 作者简介:杨东升（1990-），男，汉族，内蒙古清水河人，博士，副教授，主要从事饲用作物遗传育种研究，E-mail：yangdongsheng007@163.com
  • 基金资助:
    河套学院高层次人才引进科研启动经费资助项目（HYRC202310）；内蒙古自治区自然科学基金面上项目（2023MS03049）；内蒙古自治区“科技兴蒙”行动重点专项（NMKJXM202201）；巴彦淖尔市科技计划项目（NMKJXM202408）资助

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Abstract: Agropyron mongolicum Keng is an important natural forage in Northern China with high ecological value， feeding value and genetic improvement value. In order to determine the salt-alkili tolerance of seed germination of wild Agropyron mongolicum Keng， six wild A. mongolicum Keng germplasm including LHM， DKM， HHM， WQM， WZM and WHM were used as materials in this experiment. We researched the effects of different concentration of saline and alkaline stresses on germination rate， germination potential， germination index， vitality index， relative bud length， relative root length and germination recovery rate by the way of glass petri dishes laying filter papers. The correlation analysis and cluster analysis were used to evaluate each index comprehensively. The results showed that the indexes of the six A. mongolicum materials were inhibited to some extent， and their response to the salt and alkali stress showed obvious differences. Under the concentration of 60 mmol·L-1 saline and alkaline stress， there were significant or extremely significant positive correlations among the indexes. The order of salt-alkali tolerance in the six different populations was LHM>HHM>DKM>WQM>WZM>WHM. This experiment provided potential germplasm resources with saline-alkali tolerance for ecological restoration in Inner Mongolia.

Key words: Agropyron mongolicum Keng, Saline and alkaline stress, Seed, Germination index

摘要： 蒙古冰草（Agropyron mongolicum Keng）是我国北方地区重要的一种天然牧草，其生态价值、饲用价值及遗传改良价值较高。为明确野生蒙古冰草居群种子萌发的耐盐碱能力，本试验以6个野生蒙古冰草种质LHM、DKM、HHM、WQM、WZM和WHM为材料，采用玻璃培养皿铺滤纸的方法，研究复合盐碱的不同浓度胁迫对种子萌发期的发芽率、发芽势、发芽指数、活力指数、相对芽长、相对根长和解除盐碱胁迫恢复萌发率的影响，并通过相关分析和聚类分析对各指标进行综合评价。结果表明：在复合盐碱胁迫下，6个蒙古冰草材料各指标均受到一定的抑制，且对盐碱胁迫的响应表现出明显的差异。在浓度60 mmol·L－1盐碱胁迫下，多个指标间呈显著或极显著正相关。不同居群的蒙古冰草耐盐碱性由强到弱顺序为LHM>HHM>DKM>WQM>WZM>WHM。本试验为内蒙古盐碱地的生态修复提供了潜在的耐盐碱种质资源。

关键词: 蒙古冰草, 盐碱胁迫, 种子, 萌发指标

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