| To explore the effect of high-temperature seed soaking on breaking seed dormancy in Cyperus esculentus, three grain types of C. Esculentus were used as experimental materials, and seeds were soaked for 48 h at five different initial temperatures, including room temperature. The germination potential, germination rate, seedling fresh weight, radicle length, and plumule length of C. esculentus under each treatment were compared and analyzed. The results showed that, with the increase in soaking temperature, the germination potential and germination rate of round-grain C. esculentus were significantly improved, and seedling fresh weight and radicle length also showed better germination performance than those under room-temperature soaking. After high-temperature initial soaking, the germination potential of long-grain C. esculentus showed no obvious change, but the germination rate was obviously higher than that under room-temperature soaking, reaching approximately 90%. For large-grain C. esculentus, no significant differences were observed in seed germination potential, germination rate, or seedling fresh weight between high-temperature initial soaking and the room-temperature control. Comprehensive analysis indicates that high-temperature initial soaking can quickly and effectively break the dormancy of round-grain C. esculentus and greatly improve the germination rate of long-grain C. Esculentus. It is an effective method for breaking the dormancy of round-grain and long-grain C. esculentus, but it is not suitable for large-grain C. Esculentus. |
