桂花花冠裂片结构及其花期表皮细胞变化  

Anatomical Structure of Corolla Lobes and Epidermal Cell Changes in Flowering Stage of Osmanthus Fragrans

作　　者：张泽宏[1] 郭世群[1] 

机构地区：[1]闽南师范大学生物科学与技术学院,福建漳州363000

出　　处：《宜宾学院学报》2015年第12期112-116,共5页Journal of Yibin University

基　　金：漳州市科协资助项目(漳科重2014012)

摘　　要：运用叶片离析法和石蜡切片法制片,通过光学显微镜观察,研究了桂花(Osmanthus fragrans)花冠裂片的基本形态解剖结构以及释香过程中细胞的变化,并将桂花花冠和成熟叶片的部分数量特征进行了测量比较,探讨了桂花释放香气的细胞结构基础.结果表明:(1)桂花花冠裂片主要由上表皮、基本薄壁组织、分枝较小的维管系统和下表皮几部分组成,表皮细胞微向外突起,且其细胞表面布满规则的突起条棱.(2)桂花花冠与成熟叶片的解剖结构存在差异.(3)在桂花开放过程中,花冠裂片表皮细胞发生变化,且基本薄壁组织增厚,细胞不断膨大,但未发现异细胞.花冠裂片的这些结构及变化与桂花散发香气有一定的相关性.The basic morphological anatomy structure of corolla lobes of Osmanthus fragrans and the changes of cell in the process of aroma releasing were studied under optical microscope by using the blade isolation method and the paraffin section method, and some quantitative characteristics of the corolla lobes and mature leaves were measured and compared with to discuss the cellular structural basis of aroma releasing. The results show that： （1）The corolla lobe is composed mainly of three parts -- the upper and lower epidermis, parenchyma and slightly basic branches of the vascular system. The epidermal cells are slightly outward, and the cell surface is covered with the rules of the protruding ribs. （2） The ana- tomical structure of corolla lobes and mature leaves are different. （3） The epidermal cells of corolla lobes are changed in the process of flowering. The basic parenchyma cells become thick and the cells continue to expand, but there are no idio- blast. These structures and changes have a role in distributing fragrance of Osmanthusfiagrans.

关 键 词：桂花 花冠裂片 石蜡切片法 解剖结构 

分 类 号：Q944.58[生物学—植物学]