55份衡麦系列种质资源萌发期耐盐性筛选与鉴定  

Screening and Identification of Salt Tolerance of 55 Hengmai Wheat Accessions of Germplasms at Germination Stage

作　　者：张莹莹 赵明辉[2] 孟祥海[2] 周淑梅[1] 于国红[2] ZHANG Yingying;ZHAO Minghui;MENG Xianghai;ZHOU Shumei;YU Guohong(College of Life Sciences,Shandong Agricultural University/National Key Laboratory of Wheat Breeding,Tai'an 271018,China;Institute of Dry Farming,Hebei Academy of Agriculture and Forestry Sciences/Key Lab of Crop Drought Tolerance Research of Hebei Province,Hengshui 053000,China)

机构地区：[1]山东农业大学生命科学学院/小麦育种全国重点实验室,山东泰安271018 [2]河北省农林科学院旱作农业研究所/河北省农作物抗旱研究重点实验室,河北衡水053000

出　　处：《山西农业科学》2025年第2期92-100,共9页Journal of Shanxi Agricultural Sciences

基　　金：河北省农林科学院科技创新专项(2023KJCXZX-HZS-11);山东省自然科学基金(ZR2023MC058)。

摘　　要：盐害是影响小麦产量的重要因素之一,在小麦种质资源萌发期进行耐盐性鉴定和评价对筛选耐盐小麦新品种具有重要意义。试验采用200 mmol/L NaCl溶液模拟盐胁迫,对55份衡麦系列品种(系)进行胁迫处理,通过测定发芽率、发芽势、发芽指数、种子萌发指数、根长、芽长等10个形态指标,并进行相关性分析、主成分分析、隶属函数分析、聚类分析,对小麦种质资源进行耐盐性筛选。结果表明,小麦盐胁迫后的形态指标与对照相比均在不同程度上受到抑制,各个形态指标间的相关性存在差异;通过主成分分析将10个形态指标值划分成3个综合指标,累计贡献率达80.287%;隶属函数综合分析结果表明,师栾02-1、衡麦L214286的耐盐性最强,衡麦Z215351的耐盐性最弱;利用隶属函数综合值进行聚类分析,将55份衡麦品种(系)分成了5个类群,其中,极强耐盐种质14份、较强耐盐种质22份、一般耐盐种质15份、盐敏感种质3份、盐极敏感种质1份。Salt damage is a critical factor affecting wheat yield.Identifying and evaluating salt tolerance of wheat germplasm resources during germination stage is essential for screening new varieties of salt tolerant wheat.In this study,55 Hengmai wheat varieties(lines)were treated with 200 mmol/L of NaCl solution to simulate salt stress.10 morphological indexes,including germination rate,germination potential,germination index,seed germination index,root length,and bud length,the correlation analysis,principal component analysis,membership function analysis,and cluster analysis were carried out to screen the salt tolerance of wheat germplasm resources.The results showed that the morphological indexes of wheat after salt stress were inhibited to varying degrees compared with the control,and there were differences in the correlation among the morphological indexes.The 10 morphological index values were divided into 3 comprehensive indexes by principal component analysis,and the cumulative contribution rate was 80.287%.The results of membership function analysis showed that Shiluan 02-1 and Hengmai L214286 had the strongest salt tolerance,and Hengmai Z215351 had the weakest salt tolerance.The 55 wheat varieties(lines)were categorized into five groups by cluster analysis using membership function values,among which were 14 with extremely strong salt tolerance,22 with strong salt tolerance,15 with general salt tolerance,3 with salt sensitivity,and 1 with extreme salt sensitivity.

关 键 词：小麦 萌发期 耐盐性 主成分分析 聚类分析 

分 类 号：S512.1[农业科学—作物学]