中亚滨藜盐囊泡形态结构与发育研究

应用石蜡切片技术,通过光学显微镜和扫描电镜研究了中亚滨藜(Atriplex centralasiaticaIljin)盐囊泡的形态结构与发育.结果表明:中亚滨藜的盐囊泡起源于叶原基、茎尖及幼叶处的表皮细胞,细胞质浓厚,它经过平周分裂(不均等分裂)形成泡状细胞和柄细胞,有的柄细胞继续分裂形成2个柄细胞,其结构由1~2个柄细胞和顶端1个膨大的泡状细胞构成,外面包被一层很厚的多层次的角质层.中亚滨藜的耐盐结构———盐囊泡是一种适应性结构,具有进一步研究、应用的价值.

Morphological Structure and Development of Salt Bladder of Atriplex centralasiatica

Using paraffin sectioning, the morphological structure and development of salt bladder of Atriplex centralasiatica I1jin were examined by light microscopy and scanning electron microscopy. It was shown that in A. centralasiatica salt bladders originated from epidermal cells of leaf primordia,stem apexes and young lamina with dense cytoplasm,and these cells could form bulliform and stalk cells by periclinal division;some of the stalk cells divide into two stalk cells;the salt bladder was composed of 1-2 stalk cells and one bulliform cell with enlarged top and wrapped with multi-layer cuticle. Salt bladders of A. centralasiatica are a kind of adaptive structures and worth being further studied and exploited.