Germinations of two new hybrids of each of two crop species namely corn (Zea mays L.) and sunflower (Helianthus annuus L.) was studied. The test hybrid varieties of corn were Opener and 919, and that of sunflower were DK40404 and SF187. In both the test species there was a significant difference in percentage germination between the test varieties. Effect of temperature on germination was also significant for both the varieties of each of the two test crop species. In corn var. Opener germination ranged from 87–90.7% at alternating temperature of 10 and 25 ºC as compared to 91–96 % at constant temperature of 25 ºC while in var. 919 germination ranged from 88–93% at alternating temperature and 93–96 % at constant temperature of 25 ºC. Similarly in sunflower var. DK4040 germination ranged from 85–88% at alternating as compared to 87–92 % at constant temperature and in var. SF187 ranged from 87– 90% at alternating and 89–95 % at constant temperature of 25 ºC.
