仙人掌(Opuntia.dillenii Haw)维管组织结构研究  

Observation of Vascular Tissue of Opuntia.dillenii Haw Stem

作　　者：赵艳玲[1] 苏建英[1] 王海峰[2] 樊永军[1] 王军秀[1] 

机构地区：[1]包头师范学院生物科学与技术学院,内蒙古包头014030 [2]包头轻工职业技术学院生物工程学院,内蒙古包头014035

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2013年第2期201-204,共4页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：内蒙古自然科学基金资助项目(2012MS0514)

摘　　要：利用徒手切片法、解离液解离等方法解剖仙人掌,发现其茎的维管组织是网络圆筒状,进一步通过石蜡切片观察发现,其维管组织属于外韧维管束类型,中柱类型为真中柱,在肉质茎的横切面上,各个维管束相距不等,且在皮层内呈圈排列,每一维管束由韧皮部和木质部组成,在木质部和韧皮部之间具有形成层,且可见到形成层活动后在次生木质部和次生韧皮部留下的呈径向排列的细胞.Vascular tissue of Opuntia. dillenii Haw was dissected by freehand section and disaggrega- tion. It was observed that the vascular tissue was circular cylinder and reticular distribution and belonged to the external phloem and eustele. On the cross section, vascular bundle was found to be apart from each other in different distance and organized in circular in cortex. The vascular was made up of xylem and phloem and cambium was located between them. The cells in radial arrangement originated from cambium were also observed clearly.

关 键 词：仙人掌 维管组织 解剖 木质部 韧皮部 

分 类 号：Q944.53[生物学—植物学]