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The present study was carried out with the objective, to identify the dormancy in the seeds of sponge gourd. Seeds were soaked in distilled water for three selected durations of 24, 48 and 72 hrs. After presoaking the observations were reported as number, weight and percentage of imbibed and intact (non-imbibed) seeds. It was observed that even after 72 hrs of imbibitions, only 66.5% seeds were uptake water properly and remains 33.5% seeds were intact. In 24 hrs of imbibitions process only 51% seeds showed good water uptake and in 48 hrs of imbibitions only 59% seeds showed good imbibitions. More than 40% seeds were become intact even after 48 hrs of imbibitions. From the observation of present study it may be concluded that the seeds of sponge gourd shows physical dormancy due to hard seed coat.

Key words: Dormancy, Imbibitions and Sponge gourd.