乔灌木种子成熟以后,种子内含水量下降,贮藏物质积累丰富,这些贮藏的营养物质呈复杂难溶的状态,细胞内原生质粘度增加,透性变小,所有酶的活性降低,新陈代谢作用微弱,种皮坚硬致密。这个时候的种子,由于外界环境或内在因素,是不会发芽的,这是植物抵抗外界不良环境适应性的表现。处在这种不发芽状态下的种子,我们称之为休眠种子。 When the seeds of shrubs and shrubs mature, the water content in the seeds will decrease and the accumulated material will accumulate. These nutrients are complex and insoluble, the viscosity of the protoplasts in the cells increases, the permeability decreases, the activity of all the enzymes decreases, the metabolism is weak, Seed coat hard and dense. The seed at this time will not germinate due to external environment or internal factors, which is the plant’s resistance to adverse environmental adaptability. In this non-germinated seed, we call it a dormant seed.