两面针种子萌发的物理抑制因素探讨  

Investigation of Physical Factors of Inhibiting Germination of Zanthoxylum nitidum(Roxb.)DC Seeds

作　　者：张振山[1] 何瑞[1] 詹若挺[1] 卢识礼 唐立伟[2] 邢建永 

机构地区：[1]广州中医药大学中药资源科学与工程研究中心,岭南中药资源教育部重点实验室,国家中成药工程技术研究中心南药研发实验室,广东广州510006 [2]广州中医药大学中药学院,广东广州510006 [3]华润三九医药股份有限公司,广东深圳518110

出　　处：《广州中医药大学学报》2016年第3期411-415,共5页Journal of Guangzhou University of Traditional Chinese Medicine

基　　金：广东省协同创新中心创新科研团队建设项目(编号:A1-AFD01514A04)

摘　　要：【目的】从物理因素的角度探讨两面针种子休眠的原因。【方法】通过种子吸水试验检查两面针种子的吸水特性,采用扫描电子显微镜观察种皮的显微结构,并比较层积处理对两面针种皮的影响。【结果】两面针的种皮透水性良好,无明显吸水障碍;两面针种子具有坚硬致密的种皮结构,低温层积处理可以降解、软化其种皮结构。【结论】两面针种子中存在种子发芽的物理抑制因素,采用低温湿沙层积处理可解除两面针种子的萌发抑制作用。Objective To investigate the physical mechanism of dormancy of Zanthoxylum nitidum（Roxb.） DC seeds. Methods Water-absorbtion characteristics of Zanthoxylum nitidum seeds were tested by permeability experiments. Scanning electron microscope was used to observe the microstructure of Zanthoxylum nitidum seed testa,and the structure of seed testa before and after stratification were compared. Results Good permeability of Zanthoxylum nitidum seed testa ensured water absorption of the seeds. Zanthoxylum nitidum seeds contained hard and dense testa structure, but low temperature stratification degraded and softened the testa. Conclusion Physical factors of inhibiting Zanthoxylum nitidum（Roxb.） DC seed germination can be degraded by low temperature stratification.

关 键 词：两面针种子 种子休眠 物理抑制 

分 类 号：R282.2[医药卫生—中药学]