70份杧果种质果实矿质元素评价与统计学分析

Assessment and Statistical Analysis of Mineral Elements in Fruits of 70 Mango Cultivars

摘要: 采用原子吸收光谱法对农业部儋州杧果种质资源圃70份杧果种质果实中的9种矿质元素(K、Ca、P、Mg、Fe、Mn、Cu、Zn和B)含量进行了测定，采用方差分析、相关分析和主成分分析方法对所测定的矿质元素进行了统计学分析。统计结果表明：杧果果肉9种矿质元素中，大量元素含量依次为K > Ca > P > Mg，微量元素含量依次为Fe > Mn > Zn > B > Cu，变异系数为Mn > Cu > Zn > Fe > B > P > Ca > Mg > K；方差分析结果表明：70份杧果种质9种矿质元素间F = 1.43，Pr = 0.0177，Pr > F，9种矿质元素含量在70份杧果种质果肉中存在显著性差异；相关性分析结果表明：矿质元素之间存在着显著和极显著的相关性，其中K和Mg之间正相关性最大，相关系数达0.663，Ca和P负相关性最大，相关系数为−0.332。

Abstract: Nine mineral elements (K, Ca, P, Mg, Fe, Mn, Cu, Zn, B) in the germplasm sarcocarp of 70 mango cul-tivars which were preserved in Germplasm Repository of Mango, Danzhou city, Ministry of Agri-culture were detected using an atomic absorption spectrometer. Variance, correlation and principal component analysis methods were used to evaluate the experimental results. The statistical results showed that the macroelements of the 70 mango cultivars are K > Ca > P > Mg; the microelements are Fe > Mn > Zn > B > Cu; and the coefficients of variation are Mn > Cu > Zn > Fe > B > P > Ca > Mg > K. The variance analysis results showed that in nine mineral elements of the 70 mango cultivars, F=1.43, Pr = 0.0177, Pr > F, whose content has significant difference in the 70 mango cultivars. The correlation analysis results showed that there are significant and extremely significant correlations among mineral elements. The positive correlation between K and Mg is the most significant (r = 0.663), while the most significant negative correlation is between Ca and P (r = −0.332).