2006, 19(1): 117-120.
Abies koreanas seeds, which had a certain dormancy character, were treated by cold stratification to improve germination. The seed germination rates and germination energy were tested respectively to determine the effect of cold stratification (4℃for 1 d、15 d、25 d、40 d). The results showed that the longer the duration of cold stratification , the higher the germination rates and germination energy, and 40-day stratification had the best effect. Endogenous ABA, IAA content in seeds were examined synchronously for different treatments. For unstratified seeds, there are much ABA and little IAA. Following the process of stratification, the content of ABA gradually decreased, while IAA increased. It concluded that endogenous ABA, IAA content in seeds were connected with dormancy and germination of Abies koreana.