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本文以柑桔属的35个种或品种、金柑属的5个种式品种为试材,研究了它们的42个性状。其方法是采用大型计算机进行多元分析。即Q方式群集分析法、主成分分析及群集分析并用法、非线性变换法和数量化理论第三类分析法共四种方法。对于这四种方法,先决定计算的条件,然后令机运行。采用非线性变换法,未能取得良好结果。然而,按照数量化理论第三类研究法运行及分析,呈现出最好的结果,两种群集分析法也取得了良好结果。分析结果表明,枸橼、宽皮柑桔以及柚在柑桔属里是属于比较早的时期分化出来的类型:葡萄柚和八朔在形态学方面与柚极为相近:宽皮柑桔在形态学上呈现出广阔的变异性;日本夏橙、菊代代、伊予、日向夏及酸橙呈现出与甜橙相近的倾向;兰普来檬与柠檬和粗柠檬的位置相距较远;巴柑檬比来檬更接近于酸橙、枸橼和橙;四季桔明显地为宽皮柑桔与金柑的杂种;金豆的性状与其他金柑相比,存在着相当大的差异。
In this paper, 35 species or varieties of citrus and 5 species of kumquat were used as materials to study their 42 traits. The method is to use a large computer for multivariate analysis. That is, Q-mode cluster analysis, principal component analysis and cluster analysis and usage, nonlinear transformation and quantitative theory of the third analysis of a total of four methods. For these four methods, first determine the conditions of the calculation, and then let the machine run. Using non-linear transformation, failed to achieve good results. However, the best results were obtained from the operation and analysis of the third method of quantitative theory theory, and the two cluster analysis methods also achieved good results. The results showed that the citrus, broad-leaved citrus and grapefruit belonged to the earlier period of differentiation in citrus: grapefruit and Baishu were closely related in morphology to the grapefruit: broad-leaved citrus morphologically Showing a broad variability; Japanese summer orange, juju generation, Iraq to Japan, summer and lime tends to be similar to the tendency of sweet orange; rambutan and lemon and coarse lemon are far apart; The lemons are closer to limes, citrons and oranges; the sessile oranges are apparently hybrids of broad-leaved citrus and kumquat; and the traits of golden beans are quite different from those of other kumquats.