草地学报2026，Vol.34Issue(5)：1654-1663,10.DOI:10.11733/j.issn.1007-0435.2026.05.009
不同紫花苜蓿种质材料萌发期耐盐性评价
Evaluation of Salt Tolerance of Different Alfalfa Germplasm Materials During the Germination Period
摘要
Abstract
To screen alfalfa(Medicago sativa L.)germplasm suitable for cultivation on saline soils,this study evaluated the salt tolerance of 59 alfalfa germplasm accessions during the germination stage.Six parameters—germination potential(GP),germination rate(GR),germination index(GI),vigor index(VI),root length(RL),and shoot length(SL)were measured.A comprehensive evaluation was conducted using coefficient of variation analysis,correlation analysis,principal component analysis(PCA),subordinate function analysis(SFA),and cluster analysis.The results revealed significant variation in salt tolerance during germination among the 59 alfalfa accessions.Based on PCA and correlation analysis,four key indicators were selected for salt tolerance evaluation:relative germination potential(RGP),relative germination rate(RGR),relative ger-mination index(RGI),and relative shoot length(RSL).Cluster analysis based on D-values derived from SFA classified the 59 germplasms into five salt tolerance categories:highly salt-tolerant(1 accession),moderately salt-tolerant(22 accessions),low salt-tolerant(11 accessions),salt-sensitive(11 accessions),and highly salt-sensitive(14 accessions).Seven accessions exhibiting strong salt tolerance were identified:'Juneng 6''Ningmu No.1''Salt treasure''Shockwave''Aohan''Hunter River'and'Challenger'.These findings pro-vided a theoretical basis for alfalfa salt tolerance breeding.关键词
紫花苜蓿/种子萌发/盐胁迫/隶属函数法/聚类分析Key words
Alfalfa/Seed germination/Salt stress/Affiliation function method/Cluster analysis分类
农业科技引用本文复制引用
杨金辉,王晓彤,马永龙,余冬雯,童玉花,马梦凡,李淑霞..不同紫花苜蓿种质材料萌发期耐盐性评价[J].草地学报,2026,34(5):1654-1663,10.基金项目
国家自然科学基金(U24A20426) （U24A20426）
宁夏自然科学基金(2023AAC05019)项目资助 （2023AAC05019）
