Watermelon seeds have no obvious resting period, the newly harvested seeds have a water content of 47%, and can germinate when the conditions are suitable. However, because the pulp contains substances that inhibit germination, the germination rate of new seeds is low, and usually needs to be stored for half a year.
After 6-8 hours of water absorption, the water content of seeds reached more than 70%, the cell protoplasm changed from gel state to sol state, and the respiration and enzyme activity were enhanced to promote germination.