藜盐囊泡形态结构及发育研究

Study on Morphological Structure and Development of SaltBladders of Chenopodium album L.

利用石蜡切片技术,通过光学显微镜和扫描电镜研究了藜盐囊泡的形态结构与发育过程。结果显示:藜的盐囊泡起源于茎尖和腋芽处的茎叶表皮细胞,部分原表皮细胞生长变大,凸起于茎叶表面,形成了盐囊泡的原始细胞,原始细胞进一步分裂分化为1个柄细胞和1个泡状细胞,成熟的盐囊泡外被角质层,形成盐碱环境的适应性结构,其与耐盐机制的关系有待于进一步研究。

Using paraffin section technology,the morphological structure and development process of salt bladders of Chenopodium album L.were studied by light microscope and scanning electron microscopy.The salt bladders of Chenopodium album L.were originated from the original epidermal cells of the young stem and lamina from stem apexes and axillary buds.Some of the original epidermal cells grew larger and protruded from the epidermis,forming the original cells of the salt bladders.The original cells divide further into a stalk cell and a larger bladder.Every salt bladders wrapped with the cuticle,which is an adaptive structure of the saline-alkali environment,and its relationship with salt tolerance mechanism being further studied.