箭叶淫羊藿(Epimedium sagittatum Maxim)种子后熟作用的形态解剖研究  

Morphological and Anatomy Studies on After-Ripening Seeds of Epimedium Sagittatum Maxim

作　　者：田向荣[1,2] 张明月[1] 龙华[1] 刘祝祥[1] 石进校[1,2] 

机构地区：[1]湖南吉首大学生物资源与环境科学学院,湖南吉首416000 [2](武陵山区)植物资源保护与利用湖南省高校重点实验室,湖南吉首416000

出　　处：《种子》2015年第3期36-38,共3页Seed

基　　金：湖南省自然科学基金(编号:05 JJ40032);湖南省教育厅优秀青年项目(编号:09 B 082)支持

摘　　要：目的:了解箭叶淫羊藿种子后熟休眠的形态结构基础,探索其种子的萌发条件。方法:在对箭叶淫羊藿种子进行常规发芽试验的基础上,采用直接测量和石蜡制片技术等方法对其外部形态和解剖结构进行了观察。结果:箭叶淫羊藿种子存在明显的休眠现象,其外部形态无异常,但其胚结构未分化,停留在球型胚阶段。后熟过程中,其胚结构逐步发育完全,形成子叶胚。结论:箭叶淫羊藿种子存在明显的休眠现象,其休眠类型为形态生理休眠(MPD)。其萌发需要一定时间的层积以完成其胚分化。Objective：To explore the germination of Epimedium Sagittatum Maxim seed basing on research of their morphology and anatomy. Methods：Seeds germination, morphological and anatomy observation were used to study characteristics of after-ripening E. Sagittatum seeds. Results：E. Sagittatum seeds manifest an obvious inhibition of germination in adaptive conditions. Though there are no difference on external morphology, its embryo differentiation does not complete during after-ripening. And many days stratification can promote the differentiation of embryo axis and cotyledons, then dormancy is broken. Conclusion： E. Sagittatum seeds manifest an obvious morpho-physiological dormancy （MPD）, its germination needs stratification to finish embryo differentiation.

关 键 词：箭叶淫羊藿 后熟作用 休眠 种子 形态解剖 

分 类 号：S567.239[农业科学—中草药栽培]