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 whic...
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