北方地区藤本类忍冬叶表皮结构及其生态适应性比较研究

Comparative study on structure of leaf epidermis form and ecology adaptation of climbing honeysuckle plants in the northern China

利用光镜和扫描电镜观察了 8种在北京地区引种栽培成功的藤本类忍冬的叶表皮形态 ,观察指标包括气孔器、表皮毛、表皮细胞特征等。结合其在北京的栽培状况 ,发现叶片表皮形态和解剖结构与生态适应性之间有很强的相关性。自然分布广、适应性强的种在叶表皮形态上表现出气孔密度大、表皮细胞小、被毛或叶革质等特征。金银花、红白忍冬、淡红忍冬是 8种忍冬中适应性最强的 ,具有推广应用价值。本研究为藤本类忍冬在北方地区推广应用提供了理论基础。

Epidermal characters of leaves, which include characteristics of stomata, trichomes and epidermal cells, of 8 species of climbing honeysuckle plants which are introduced successfully from abroad and domestic have been observed by the light microscope and scanning electron microscope. According to their cultivated characters in Beijing these years, we can find that there is a strongly relationship between the morphological and anatomical structures and their ecological adaptability. The leaves of the species which spread broadly and adapt different environment easily, have the epidermal characters such as the greater density of stomata, the reduction in epidermis cell size as well as trichomes covering or leathery face. Lonicera japonica, L. japonica var. chinensis, L. acuminata var. acuminata have strongly adaptability among 8 species. This research is helpful for the application of climbing honeysuckle plants in the northern China.