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植物研究 ›› 2009, Vol. 29 ›› Issue (5): 524-528.doi: 10.7525/j.issn.1673-5102.2009.05.003

• 论文 • 上一篇    下一篇

沙芥属(Pugionium Gaertn.)植物子叶叶表皮微形态特征研究

张凤兰1,2;郝丽珍1,2*;杨忠仁1,2;胡宁宝1,2;王六英3;张进文1,2   

  1. (1.内蒙古农业大学农学院,呼和浩特010019) (2.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,呼和浩特010019) (3.内蒙古农业大学生态环境学院,呼和浩特010019)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-09-20 发布日期:2009-09-20
  • 通讯作者: 郝丽珍
  • 基金资助:
     

Micromorphology of Cotyledon Epidermis of Pugionium Gaertn.

ZHANG Feng-Lan;HAO Li-Zhen;*;YANG Zhong-Ren;HU Ning-Bao;WANG Liu-Ying;ZHANG Jin-Wen;   

  1. (1.College of Agronomy,Inner Mongolia Agricultural University,Hohhot010019) (2.Inner Mongolia Key Laboratory of Germplasm and Germplasm Enhancement of Wild and Special Vegetable,Inner Mongolia Agricultural University,Hohhot010019) (3.College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Hohhot010019)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-09-20 Published:2009-09-20
  • Contact: HAO Li-Zhen
  • Supported by:
     

摘要: 采用扫描电镜观察了十字花科沙芥属二年生草本植物沙芥、斧翅沙芥、距果沙芥和宽翅沙芥的子叶表皮形态特征。其结果表明:沙芥属植物子叶上下表皮均有凸起的大的条形泡状细胞分布,呈平行排列,且每个种的上表皮的泡状细胞的密度均大于下表皮的泡状细胞密度,其中上下表皮的密度以沙芥的为最小,以宽翅沙芥为最大,且沙芥、距果沙芥和宽翅沙芥的下表皮的泡状细胞长度大于上表皮,而斧翅沙芥则相反;沙芥、斧翅沙芥与宽翅沙芥的叶片上下表皮细胞胞隆起,气孔下陷,而距果沙芥子叶上表皮的气孔生于表皮细胞下,表皮细胞未隆起,气孔下陷。该研究说明沙芥属植物子叶表皮微形态既有种间相似的特征,又存在一定的特异性,可为本属种间的分类及其抗逆机理提供形态学依据。

关键词: 沙生蔬菜, 沙芥属, 子叶表皮, 微形态特征

Abstract: The plants of Pugionium Gaertn. were biennial plants in Cruciferae, morphological characteristics of cotyledon epidermis of four species in Pugionium Gaertn. were investigated by using scanning electron microscope(SEM). The results showed that the bulliform cell was distributed in adaxialepidermis and abaxial-epidermis of Pugionium Gaertn. cotyledon, which was protuberant, large and parallel arraying, and its density in adaxial-epidermis was higher than that in abaxial-epidermis, and the density of P.cornutum(L.)Gaertn was minimum, the density of P.dolabratum var. was maximal, the length of the bulliform cell of P.dolabratum Maxim. in adaxial-epidermis was larger than that in abaxial-epidermis, but the rest was contrary. The P.cornutum(L.)Gaertn, P.dolabratum Maxim. and P.dolabratum var. platypterum.H.L.yang had ridgy epiderial cells in adaxial-epidermis and abaxial-epidermis, with sinking stoma, but guard cells of P.calcaratum Kom. were below the even epidemic cell, with sinking stoma. The study could clarify that the same characteristic of microstructure of cotyledon epidermis of Pugionium Gaertn, and the difference in species, so it could provide morphological evidence for stress resistance and taxonomy.

Key words: sandy vegetable, Pugionium Gaertn., cotyledon epidermis, micromorphology

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