关键词: 忍冬, 种植区域, 形态特征

Abstract: [Objective] The aim of the study was to explore the morphological differences in L. japonica from different growing areas and to analyze the effects of climatic factors on morphological traits of L. japonica. [Method] Experimental material of L. japonica were chosen from 9 natural populations belonging 3 growing areas (Shandong,Henan and Hebei).The morphological traits (plant height and diameter,branch height and diameter,the number of flower in each branch,leaf length and width,bud size and weight)L. japonica were measured.The data were analyzed using SPSS statistical software. [Results] There were significant differences in morphological traits (e.g.,branch height and diameter,plant height and diameter,leaf and bud)among different growing areas.9 natural populations were divided into 3 groups,suggesting obvious geographic differentiation in morphological characteristics of L. japonica.The statistical analysis showed that there was a correlation between traits.The phenotypic traits were influenced by longitude rather than latitude and altitude. [Conclusion] There were significant differences in morphological traits of L. japonica among different growing areas.This may provide a reference for species division and classification.

Key words: Lonicera japonica, growing areas, morphological traits