复合盐碱胁迫对6个野生蒙古冰草居群种子萌发的影响

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中图分类号：S343.4 文献标识码：A 文章编号：1007-0435（2025）09-2854-09

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

YANG Dong-sheng1.2.3，BAO Gerilel，WANG Le ⋅le1 ，LIU Chel，GUO Li-ping4， AN Qi’， HAO Shui-yuan1，2.3*

（1.DepartmentofgroomyHetaolge，ayar，nerogoliaOoohina；LaboratoryfeGreegriculuraloduct SafetyProductindarlyingotrolitaoreaaurergolia5ohina；oogicalItiCter forDurumWheatBaynur，InnerMongoliaO15Ooo，China;4.ForestryandGrassandComprehensiveSecurityCenterofInerMongolia AutonomousRgiohot，Iergoliaohina;5uralevitalzatioromoloicalesticidetiCnterfol Autonomous Region，Hohhot，InnerMongolia OlOoll，China）

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 ger mination 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 rateby 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 diferences.Under the concentration of 60mmol⋅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>V VHM. 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

土壤盐碱化是由于人类活动或自然活动引起的一种土壤退化现象，广泛分布于干旱和半干旱地区[1]。（剩余10954字）