Multiple element concentration in the grain of spring barley (Hordeum vulgare L.) collection

Multiple element analyses were carried out to investigate variation in element concentrations in barley grains of 336 genotypes. Of 13 elements analyzed, Ba ranged from 0.2 to 8.9 mg kg−1, Ca from 186.4 to 977.5 mg kg−1, Cu from 1.5 to 9.8 mg kg−1, K from 353.2 to 7721.5 mg kg−1, Mg from 1049.8 to 2024.2 mg kg−1, Mn from 8.1 to 22.9 mg kg−1, Na from 55.9 to 627.9 mg kg−1, P from 2272.9 to 5428.8 mg kg−1, S from 880.7 to 1898.0 mg kg−1, Si from 19.1 to 663.2 mg kg−1, and Sr from 0.35 to 2.62 mg kg−1 in the barley grain. The least square means showed high Zn, Fe, Mg, P, and S concentration in AM-64 and AM-228 genotypes. The principal component analysis of element concentration showed four PCs explained 64.3% total variance. Strong positive correlations (p

本研究通过多元素分析，探究336份基因型大麦籽粒的元素浓度变异情况。在所检测的13种元素中，大麦籽粒内各元素的浓度范围依次为：钡(Ba)0.2~8.9 mg·kg⁻¹、钙(Ca)186.4~977.5 mg·kg⁻¹、铜(Cu)1.5~9.8 mg·kg⁻¹、钾(K)353.2~7721.5 mg·kg⁻¹、镁(Mg)1049.8~2024.2 mg·kg⁻¹、锰(Mn)8.1~22.9 mg·kg⁻¹、钠(Na)55.9~627.9 mg·kg⁻¹、磷(P)2272.9~5428.8 mg·kg⁻¹、硫(S)880.7~1898.0 mg·kg⁻¹、硅(Si)19.1~663.2 mg·kg⁻¹，以及锶(Sr)0.35~2.62 mg·kg⁻¹。最小二乘均值分析结果显示，基因型AM-64与AM-228的锌(Zn)、铁(Fe)、镁(Mg)、磷(P)及硫(S)浓度较高。对元素浓度开展的主成分分析结果表明，前4个主成分(Principal Component, PC)累计解释了64.3%的总变异。各元素间存在较强的正相关关系（p