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《Journal of Agricultural University of Hebei》 2001-04
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The studies of principal component analysis on the main economic character and superior variety selection of walnut

YANG Jun-xia, GUO Bao-lin, ZHANG Wei-hong, GU Qin-xia (College of Forestry, Agricultural University of Hebei, Baoding 071000, China)  
Based on specimen correlation matrix, the main eco nomic character of 1 5 last varieties of walnut were determined by pincipal component analysis, which included nut width, average nut weight, nut shell thickness, nut kernel percent age, per kernel weight, total fat content of kernel, total protein content and kernel yield per m2 tree-crown projection area. According to more than 86.29% of the cumulative variance proportion, the results proposed four principal compone nts and its function equations which reflected the main economic characters of walnut. The key principal component values of various varieties were calculated, it will be applied to selecting fine varieties, the results were similar to pra ctical phenotype. The method of principal component analysis was more scientific and simple than the method of quiver a mark of main economic characters while e valuating main economic characters of walnut comprehensively, It will provide a theoretical basis for selecting fine varieties of walnut.
【Fund】: 河北省教育厅资助项目 (982 18)
【CateGory Index】: S664.1
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