凡是成熟的种子,给予适宜的发芽条件,却不能正常发芽或发芽率很低,这一自然现象叫休眠。种子休眠是经过长期自然造择的结果,是植物的一种生物学特性。它可以保护种子在不良的环境下免受伤害,使其种族得以繁衍。种子休眠与农业生产有着密切的关系,对于那些珍贵的、价格昂贵的、生长周期较短的蔬菜种子,尤其是对于那些近几年推广的蔬菜品种种子,了解其休眠特性就有着更为现实的意义。有些栽培植物,由于长期人工选择的结果,休眠期很短或者休眠性特不明显,乃至丧失了休眠特性。有些蔬菜种子往往在收获前的母株上就萌发 All mature seeds, given appropriate germination conditions, but not normal germination or germination rate is very low, this natural phenomenon called sleep. Seed dormancy is the result of long-term natural selection and is a biological property of plants. It protects the seed from harm in adverse circumstances and multiplies its race. Seed dormancy is closely related to agricultural production. It is more realistic for those precious and expensive vegetable seeds with shorter growth periods, especially for the seeds of vegetables introduced in recent years, to understand their dormancy characteristics significance. Some cultivated plants, due to the result of long-term artificial selection, have a very short dormancy period or a very insignificant dormancy and even lose dormancy. Some vegetable seeds tend to germinate on the mother plant before harvest