Abstract:

In order to understand the influence of water temperature and treating time on seed imbibition volume and seed vigor of Pinus tabulaeformis Carr., the soaking tests with different water temperature and treating time were carried on, and the water absorption and vitality of the seed was determined. The results showed that: seed imbibition volume continually increased with the increasing water temperature or treating time. The seed vigor was higher under the condition of water temperature 20-50℃, treating time 6-12 h. Pinus tabulaeformis Carr. seeds soaking water temperature should be below 50℃, in this temperature range, different soaking time was required for maximum vitality. Soaking time was 6 h with 20-30℃ temperature water, and soaking time was 4 h with 40-50℃ temperature water.