沙芥种子发芽过程中的解剖结构特征  

Anatomical Structure Features of Pugionium cornutum Seeds in Germination Process

作　　者：杨忠仁[1] 贾晋[1] 郝丽珍[1] 张卫华[1] 张凤兰[1] 

机构地区：[1]内蒙古农业大学农学院内蒙古自治区野生特有蔬菜种质资源与种质创新重点实验室,内蒙古呼和浩特010019

出　　处：《贵州农业科学》2013年第3期30-32,39,共4页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"蒙古高原特有属-沙芥属植物遗传多样性研究"(30860174);教育部科学技术研究重点项目"沙芥种子生理及繁种技术研究"(206027);内蒙古自然科学基金项目"沙芥属植物种质保存及其适应沙漠生态环境机制的研究"(20080404MS0305);农业公益性行业科研专项经费项目"适宜西北非耕地亚逆境栽培和市场销售的园艺作物品种筛选与布局"(201203004)

摘　　要：为了给沙芥种子的萌发研究提供解剖学依据,采用石蜡切片方法观察了沙芥种子萌发过程中的解剖结构变化。结果表明,沙芥种子的种皮结构简单,由两层细胞组成,外层细胞的外壁木质化;播种至萌动露白前的子叶表皮分化出具有贮水功能的体积较大的泡状细胞镶嵌于表皮细胞间,露白至出苗前子叶表皮中的泡状细胞和叶肉组织开始退化。Anatomical structure changes of P. cornuturn seeds in germination process were observed by paraffin section method to provide a anatomical reference or the research on P. cornuturn seed germination. The results showed that the seed coat structure was simple and composed of two layers of cells, and the outer wall was lignification; From seed sowing to germination, cotyledon epidermal differentiated to large alveolar cells for stocking water, embedded in the epidermal cells; From germination to seedling, bubbly cells in the cotyledon epidermal and mesophyll tissue began to degenerate.

关 键 词：沙芥 种子萌发 解剖结构 

分 类 号：S718.47[农业科学—林学]