Subjects: Biology >> Botany submitted time 2022-08-30 Cooperative journals: 《广西植物》
Abstract： Epimedium sagittatum plants have an important medicinal value and a huge market demand, but the characteristics on dormancy and germination of their seeds are still unclear, which seriously affect its industrial seedling production and cultivation. In order to verify the type of seed dormancy and the optimal way to break dormancy, the mature seeds of E. sagittatum were used as experimental materials, we investigated the water uptake and the desiccation tolerance of seeds, as well as the effects of temperature, stratification and phytohormone on seed dormancy and germination. The results were as follows: (1) E. sagittatum seeds had no physical dormancy and (2) Have desiccation tolerance. (3) The germination percentage of seeds was zero at 4-25 篊 and darkness, and these seeds had dormancy characteristics. (4) The embryo/seed ratio was very small, as well as embryo growth and development and seed germination rate and germination percentage were increased by stratification at 4 篊, 10 篊 and fluctuating temperature.(5) Gibberellin and fluridone significantly increased the germination rate and germination percentage of seeds. We considered that the dormancy type of E. sagittatum seeds was morphophysiological dormancy. The optimal method to release dormancy and promote germination was that seeds were stratified at 10 篊 for 30 days and then germinated at 4 篊.
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