主成分分析法在仁用杏品种主要经济性状选种上的应用研究

THE APPLICATION OF PRINCIPAL COMPONENT ANALYSIS ON MAINLY ECONOMIC CHARACTERS AND SUPERIOR VARIETY SELECTION OF APRICOT FOR NUCLEOLUS USING

应用主成分分析法 ,从样本相关矩阵出发 ,对仁用杏 9个品种的主要经济性状 (单株产果量、单果重、出肉率、出核率、核出仁率、干核重、干仁重、单株产仁量和kg仁需核量 )进行分析 ,依性状累积方差贡献率达到85%以上 ,提出了两个反映仁用杏主要经济性状的主成分及其主成分函数式。通过计算各品种的重要主成分值 ,进而选择综合经济性状优良的品种。其结果与品种的实际表型相近似。表明用主成分分析法对仁用杏主要经济性状综合评选比优良性状打分评优科学、简便 。

Based on specimen correlation matrix, the main economic character of 9 varieties of apricot for using nucleolus were determined by pincipal component analysis,which included fruit yield per tree,weight per fruit,flesh rate,stone rate,kernel rate,dry stone weight,dry kernel weignt,kernel yield per tree,and amount of stone to produce one kilogram kernel.According to more than 85% of the cumulative variance proportion,the results proposed two principal components and its function equations which reflected the main economic characters of apricot for using nucleolus.The key principal component values of various varietics were calculated,it will be applied to selecting fine varieties,the results were similar to practical phenotype.The method of principal component analysis was more scientific and simple than the method of qiving a mark of main economic characters while evaluating main economic characters of apricot using for nucleolus copmprehensively.It will provide a theoretical basis for selecting fine varieties of apricot using for nucleolus.