A Study on the Longevity and Planting Value of 20 Tree Species Seeds Stored under Different Temperature

The seed survival rate of 20 local tree species in Yunnan was periodically mensurated under the conditions of low temperature and normal temperature.The seed longevity and planting value were estimated with the livability of 50% and 90%.The results showed that seed longevity and planting value were increased 1.3~17.4 a,and 0.8~4.2 respectively when the seeds were preserved under low temperature.