This experiment was carried out to get the basic information about long term storage (Temp.: -10${pm}$1$^{circ}C$ and -l${pm}$1$^{circ}C$, RH; 30${pm}$6) of rice germplasm by using three Japonica and one Indica x Japonica cultivars based on the storage periods (96, 86, 58 and 20 months). The germination ability, based on the storing periods, was tested under the conditions of 30-32$^{circ}C$ and 15-17$^{circ}C$ air temperature. The results obtained are summarized as follows: 1. There were no significant differences between the short and long term storage conditions in the percentage of germination, average germination period, germination coefficient of the four varieties tested under both 15-17$^{circ}C$ of low and 30-32$^{circ}C$ of optimum temperature conditions. 2. Eventhough there were no significant differences in germination depending on the storage periods under optimum temperature condition (30-32$^{circ}C$). Longer storage duration resulted in lower germination percentage, longer average germination period and lower germination coefficient under low temperature condition (15-17$^{circ}C$). Comparing the varieties, the germination percentage of a Indica/Japonica cultivar "Tongil" was lower than that of Japonica cultivars under the low temperature condition (15-17$^{circ}C$). 3. The longer period of storage, the more abnormal plants had appeared. 4. The germination ability was lost earlier under the condition of high moisture content in the seed and non-ventilation container