不同大白菜品种矿质元素含量评价

Evaluation of mineral element content in different varieties of Chinese cabbage

为了分析评价不同大白菜品种叶球中矿质元素含量差异,以8个大白菜品种为试材,测定其矿质元素K、P、Ca、Mg、Cu、Fe、Mn和Zn的含量,并利用水平分析、相关性分析、主成分分析和聚类分析对大白菜叶球矿质元素含量进行综合评价。结果表明,水平分析表明不同品种大白菜矿质元素含量存在一定差异,平均含量由高到低依次为K>P>Mg>Ca>Fe>Zn>Mn>Cu,变异系数介于9.62%(Ca)~72.47%(Fe)之间;相关性分析表明大白菜叶球中矿质元素含量存在复杂的关联性;主成分分析表明K、Ca、Mg、Mn和Zn是大白菜的特征性矿质元素,提取的3个主成分累计方差贡献率为89.13%;聚类分析对8个大白菜品种的矿质元素含量的相似性进行分析,结果将8个品种分为3类。研究结果为大白菜营养特性评价、种质资源的利用和新品种选育提供数据参考。

In order to analyze and evaluate the difference of mineral element content in bulbous of different varieties of Chinese cabbage,we took 8 Chinese cabbage varieties as test materials,determined the content of mineral elements K,P,Ca,Mg,Cu,Fe,Mn and Zn,and comprehensively evaluated the mineral element content of leaf balls of Chinese cabbage by level analysis,correlation analysis,principal component analysis and cluster analysis.The results showed that the level analysis showed that there were differences in the mineral elements contents of Chinese cabbage among different cultivars,and the average contents followed from high to low were K>P>Mg>Ca>Fe>Zn>Mn>Cu,with coefficients of variation ranging from 9.62%(Ca)to 72.47%(Fe);Correlation analysis showed a complex correlation between the mineral element contents in Chinese cabbage leaf balls;Principal component analysis showed that K,Ca,Mg,Mn,and Zn were characteristic mineral elements in Chinese cabbage,and the cumulative variance contribution of the extracted three principal components was 89.13%;The similarities of the mineral element contents of the eight Chinese cabbage cultivars was analyzed by Cluster,and thet were classified into three groups.The results provide data reference for the evaluation of nutritional characteristics,the utilization of germplasm resources and the breeding of new varieties of Chinese cabbage.