Study of priming on the germination traits of corn (K. Sc640)

To study of priming effect on characteristics of germination in corn seedling، an experiment was done based on CRD with three replications in the farm research of Qaemshahr Islamic Azad University in 2010. Treatments were considered as polyethylene glycol (PEG) with densities 5 and 10 percent، potassium nitrate (KNo3) with densities 1 and 2 percent، potassium chloride (KC1) with densities 2 and 4 percent، water and control (without prime). The results showed that the maximum germination rate for polyethylene glycol prime solution obtained with potassium nitrate with densities 10 and 1 percent and hydro priming (water) and maximum rootlet length and germination average obtained for control and potassium nitrate 1 percent. The maximum length of rootlet to prime obtained with potassium nitrate 1 percent and lowest rootlet length and stems to prime potassium nitrate and potassium chloride with densities 2 and 4 percent. The maximum germination rate index، mean daily germination and mean time to germinate obtained priming with potassium nitrate and potassium chloride with densities 2 and 4 percent and highest dry weight of rootlet to stem obtained priming potassium chloride with 4 percent. The highest wet weight rate of rootlet to stem obtained priming potassium chloride with densities 4 percent and minimum vigor ii index obtained with primed product by potassium nitrate and potassium chloride with densities 2 and 4 percent.