When the seed wants to germinate, the endosperm in the seed, the decomposition of organic nutrients in the cotyledon, and the assimilation of organic and inorganic substances into the protoplasm of life, these activities are carried out under the catalysis of various enzymes, and the enzyme will carry out the catalysis under a certain temperature, so temperature is a necessary condition.
Dry seeds have little water content, generally only accounting for 5% to 10% of the total weight of the seeds. Under such conditions, the seeds will be very weak. After the seeds absorb enough water, the seed coat will expand and soften, oxygen can enter, respiration can be enhanced, and the activity of the seeds will be strengthened.
After the seeds get proper temperature and sufficient water, they will start to germinate. When the oxygen is sufficient, the respiration of embryo cells will be gradually strengthened, and the activity of enzyme will be vigorous, which provides the need for seed germination.
