METHODS FOR RAPID SEED GERMINATION OF BROUSSONETIA PAPYRIFERA

Seed germination is one of the main methods of reproduction and expansion of the distribution area of Broussonetia papyrifera in the wild. There are many factors affecting seed germination, such as sterilization, temperature, light and exogenous hormones. The sterilization treatment with 70% EtOH for 30 seconds and 0.1% HgCl2 for six minutes show the best disinfection effect and the least toxicity. The optimum temperature and light for seed germination were 30 degrees C and 16 h/d light respectively. 6-Benzylaminopurine (6-BA) and gibberellins (GA3) improved seed germination, and GA3 had a better effect, especially at the concentration of 1600 mg/L. NAA had inhibitory effect on seed germination. Our study may help develop a seed germination system for B. papyrifera and be a valuable method for the conservation and regeneration of seedbanks.