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我国杉木(Cunninghamia lanceolata(Lamb)Hook)自然分布区内57个地点(群体)球果、种子、针叶的20个性状研究结果表明:所有性状各群体间的差异均达极显著的程度;各性状绝大部份群体内变幅小于群体间变幅;各性状的个体频率分布呈正态,但峰度和偏度不同。 杉木叶片内树脂道数是变异最大的一个性状,每一叶片内的个数为1～7个,变异系数群体间为30.6％,群体内为0～66.4％。相关分析的结果表明:(一)同器官(叶、球果、种子)同类性质的性状(如叶长和叶宽)相关特别显著;不同器官和不同性质性状间无一定的显著相关关系。(二)、叶长和经度成正相关,而与纬度成负相关,因而在杉木分布区中,由东南到西北方向,叶片长表现为由大到小的渐变趋势;叶宽和经度成正相关;叶厚与纬度成正相关,但均有例外。其它性状与经纬度相关不明显,表明杉木性状的变异比较复杂,无一定的地理变异模式。
The results of 20 traits of cones, seeds and conifers in 57 locations (groups) in the natural distribution area of China Cunninghamia lanceolata (Lamb Hook) showed that the differences among all the groups were significant The amplitude of most traits in the population was smaller than that in the population. The individual frequency distribution of each trait was normal, but the kurtosis and skewness were different. The number of resin channels in Cunninghamia lanceolata leaves was the most significant one, ranging from 1 to 7 in each leaf, with 30.6% in the variation coefficient population and 0 ~ 66.4% in the population. The results of correlation analysis showed that: (1) The correlation between the same properties of organs (leaves, cones and seeds) (such as leaf length and leaf width) was particularly significant; Leaf length and longitude are positively correlated, but negatively correlated with latitude. Therefore, in the Chinese fir distribution area, from southeast to northwest, leaf length shows a gradual change trend from large to small; leaf width and longitude are positively correlated; Leaf thickness is positively related to latitude, but there are exceptions. The correlation between other characters and latitude and longitude was not obvious, which indicated that the variation of Chinese fir characters was more complicated and there was no certain pattern of geographical variation.