南京林业大学学报（自然科学版）2011，Vol.35Issue(4)：23-26,4.DOI:10.3969/j.issn.1000-2006.2011.04.005
黄山花楸种子休眠解除技术及其解剖学观察
Dormancy breaking techniques and anatomy mechanism of seed of Sorbus amabilis
摘要
Abstract
Dormancy breaking techniques and ultra-structural changes were studied in seeds of Sorbus amabilis Cheng ex Y(u). Seeds were under different treatments including various levels of GA3, NaOH, H2SO4, cold stratification and mechanical scarification. The results showed that 90 % of the seeds of S. Amabilis germinated by mechanical scarification and cold stratification for a period of 75-90 days, which are effective methods to break dormancy. GA3 + cold stratification can also break seed dormancy, but less effective than treated with directly cold stratification. Other treatments could not break seed dormancy. Micro-structural characters of seed surface and cotyledon cells were observed under scanning and transmission electron microscope in different period of cold stratification, the results showed that germination rate and dormancy breaking effects are directly related to the degree of cuticles broken and disintegration on seed surfaces, and directly related to structural changes and deposition degrade in cotyledon cells.关键词
黄山花楸/休眠解除/种子萌发/解剖结构Key words
Sorbus amabilis/dormancy breaking/seed germination/anatomy structure分类
农业科技引用本文复制引用
陈昕,曹珊珊,张红星..黄山花楸种子休眠解除技术及其解剖学观察[J].南京林业大学学报（自然科学版）,2011,35(4):23-26,4.基金项目
南京林业大学人才基金项目(2005) （2005）
