隔年贮藏檫树种子形态成熟时,果皮虽已呈蓝黑色,但生理上尚未完全成熟。因此,当年采收的种子即使生活力很高,通常都不会前发。到次春,仍然有相当一部分种子不会萌发,一般场圃发芽率只有20～60%左右(表一)。倘若种子处理和贮藏不当,发芽率更低。这表明,檫树种子采收后,在生理上需 In the next year, when the seed of Morus alba is stored in mature form, the peel has blue-black color but not yet fully matured physiologically. Therefore, the seeds harvested in the current year are usually not advanced even though their viability is high. To the next spring, there is still a considerable part of the seeds will not germinate, the general field of germination rate of only about 20 to 60% (Table 1). Germination rates are lower if the seeds are handled and stored improperly. This shows that the tree seed harvest, the physiological needs