大豆种质资源苗期耐碱筛选及评价分析

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中图分类号：S565.1 文献标志码：A 文章编号：1008-0864（2025）07-0054-18

Alkaline Tolerance Screening and Evaluation Analysis of Soybean Germplasm Resources at Seedling Stage

ZHENGHuanbin 1，2 ，LIMing³，YANGSuxin²*，WUWeilin1*

（1.College of Agriculture，Yanbian University，Jilin Yanji 133002，China；2.KeyLaboratoryof Soybean Molecular Design Breding，NortheastInstituteofGeographyndAgroecology，ChineseAcademyofSiences，Changcun3OO2，China;.ege ofLife Sciences，JilinAgricultural University，Changchun130118，China）

Abstract：Inorder to explore the tolerance of diferent soybean germplasm resources to alkali stress treatmentat seedling stage，andestablish theevaluationsystemof soybeanalkaline toleranceat seedlingstage，326 soybean varieties were as materials.They were treated with the pH9.O，150 mmol·L-1 mixed alkali solution（NaHCO ：Na2CO 3 3 =5：1 ）for7d.Thechanges of12 growth-related indexes underdiferent treatments，such asdry/fresh weightof shoot orroot，total dry/fresh weight，intactrootsnumber intactroots length，roottipsnumber，rot/shootratio，relative chlorophyllcontent，and water contentof plants weredetermined.The results showed that alkali stresssignificantly reduced the growth indexes of soybean varieties at seedling stage except root/shoot ratio.The comprehensive evaluation value （ D value）of alkali tolerance was obtained by principal component analysis and fuzzy membership function method.According to the D value，326 soybean varieties were classified into 4 groups：extremely alkali tolerantvarieties（18varieties），alkali tolerant varieties（14Ovarieties），alkali sensitivevarieties（13O varieties） and extremely alkali sensitive varieties（38 varieties），and the comprehensive evaluation system were established. Above results providedtheoretical basis for theselectionand evaluation of alkaline resistant soybean varieties.

eywords：soybeans；alkali tolerance；germplasm screening；comprehensive evaluation

土壤盐碱化对全球农业造成了一定的威胁，根据粮食及农业组织（粮农组织）的数据，目前有超过10亿 hm2 的土地受到盐分的影响，其中，约60% 属于苏打盐碱地。（剩余11528字）