Sorghum is a very demanding species to heat, it prefer at sowing minimum germination temperatures higher than 10oC. For this reason, at the Agricultural Research – Development Station Secuieni, we have experienced a number of 16 samples of sorghum with 100 grains each under different temperatures in order to determine the effect of temperature on the germination of Sorghum bicolor L. Following the results, sit was observed that, in laboratory conditions, at temperatures ≤ with 10 oC is obtained a very slow germination and with a huge percentage of grains which do not germinate. Thus, at a temperature of 7 °C, the number of days necessary for seeds germination was of 21 days and the percentage of germinated seeds was only of 41.6 %. By increasing the temperature provided at germination until 10 °C, the number of days necessary for germination decreased to 18 days, and the percentage of germinated seeds was increased up to 67.5 %. Once we assured the germination temperatures higher than 14 °C and respectively 18 °C, it was observed an improvement of the seeds germination capacity at Sorghum bicolor L. The sorghum grains have germinated in only 9 days and the percentage of germinated seeds was of 81.2 % when it was subjected to temperatures of 14 °C, but at the ensuring of a temperature of 18 °C, the sorghum grains have germinated in 6 days and the percentage of germinated seeds was of 93.5 %.