The effect of priming and its period on germination and seedling growth of forage sorghum (speedfeed)

In order to study the effects on germination properties of forage sorghum (speedfeed) priming an experiment was performed in factorial shape and in the mould of totally accidental design in 3 replications in Qaemshahr azad university in 2010. The treatments had PEG of 5 and 10 percent density، KNO3 of 1 and 2 percent density، KCL of 2 and 4 percent density and in the period of 4، 8 and 16 hours. The results showed that the most caulicle length was gained under 16 hours treatment and priming of 4 percent density. But the most caulicle KCL and seedling length was gained under time treatments and KCL priming of 4 percent density during 16 hours. The most length ratio of ridicule and caulicle CRLS was also gained by PEG priming of 10 percent density during four hours. About the most wet weight ratio R/S، and the dry weight ratio R/S، they were seen by KNO3 and PEG of 1 and 5 percent density in the period of 4 and 16 hours. The most germination rate was also gained by PEG of 10 percent density and during 8 hours. The most and the least normal bud was gained by KNO3 and KCL priming of 1 and 4 percent density in common duration of 4 hours، respectively.