黄花补血草叶片盐腺的发育解剖学研究
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宁夏回族自治区国际合作专项;宁夏自然科学基金(NZ10209)


Developmental and Anatomical Studies of the Salt Gland in Limonium aureum
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    摘要:

    利用扫描电镜和石蜡切片法对黄花补血草叶片进行解剖学研究,观察叶片营养器官中盐腺的分布、密度、结构及发育过程。结果表明:黄花补血草叶片上、下表皮有大量的盐腺分布,且下表皮的盐腺密度比上表皮的多,盐腺周围有7~9个表皮细胞呈辐射状排列;盐腺的成熟结构由12个细胞构成,中央有4 个分泌细胞,每个分泌细胞都有一个明显的分泌孔,是盐分泌出的通道;分泌细胞外侧伴有4个弧形的毗邻细胞围成一圈;盐腺内部靠近叶肉细胞处有4 个收集细胞。研究认为,黄花补血草盐腺由一个表皮原始细胞发育而成,分别经历单细胞时期、2细胞时期、4 细胞时期、8 细胞时期和12细胞时期的不同发育阶段。

    Abstract:

    The leaf anatomical structure of Limonium aureum was studied by SEM and paraffin method,especially for observing the salt gland location,structure and development.The result indicated that a lot of salt glands was lay in the leaf.The density of salt glands on the abaxial epidermis was slightly higher than that on the adaxialepidermis.And 7~9 epidermal cells radially arranged surrounding thesalt gland.The mature structure of salt gland included 12 cells.There were 4 central secretory cells,and a small hole on the center of saltgland cuticle,where salt released.Outside the secretory cell were the adjacent cells,which were cambered.Behind them were 4 big cells called collecting cell which was close tomesophyll cells.The salt gland of Limonium aureum originaled from a single epidermal cell.After that,it went through 5 stages which were called as single cell stage,2 cell stage,4 cell stage,8 cell stage and 12 cell stage,respectively.

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倪细炉,谭玲玲,沈效东.黄花补血草叶片盐腺的发育解剖学研究[J].西北植物学报,2012,32(8):1587-1591

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  • 在线发布日期: 2012-08-25
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