不同居群野生早樱形态变异研究

Study on the Morphological Variations of Cerasus subhirtella var.ascendens in Different Populations

利用数量分类学手段对福建武夷山和江苏宝华山不同居群野生早樱形态特征进行了比较研究。通过对2大居群24项形态指标的分析,不论是聚类分析还是主成分分析,2大居群的各个个体均归并为2类,自然体现出不同居群野生早樱表型特征的较大差异。主成分分析显示,叶部特征的长度、宽度、叶基夹角等,以及花部特征的花萼筒、花冠幅、花序总梗等是造成不同居群野生早樱表型差异的主要因素,单因素方差分析也印证了这一结论。最后,建议在分类学关系上将福建武夷山野生早樱做为大叶早樱新变种处理。

The measurement of numerical taxonomy was applied to study the morphological variations of Cerasus subhirtella var. ascendens in different populations between Fujian Wuyi Mountain and Jiangsu Baohua Mountain. The 35 morphological indices analysis showed, the individuals in 2 populations were incorporated into 2 types according to the results of clustering analysis and principal component analysis （PCA）, and the morphological variations are naturally showed in the results. The PCA results indicated that the characteristics of length, breadth, the angle of leaf basal in lamina and the characteristics of calyx-tube, corolla dimension and inflorescence pedicel in the flower were the main reasons leading to the morphological variations, and the F-test of single factor variance analysis verified the conclusion. Finally, the cherry in Fujian Wuyi Mountain should be treated as a new variation of Cerasus subhirtella in taxonomy.