The Effect of Gibberellic Acid (GA3) on some Characteristics of Cyclamen Flowering during the Second Flowering Year

The effect of gibberellic acid (GA3) spraying on some characteristics of cyclamen flowering trend during the second flowering year was investigated. GA3 sprays were applied in concentrations of 0, 20, 30, 40, and 50 mg/l. The trial was carried out as a randomized complete design of three replications. The total flower count, flower count during the flowering peak, days from spraying to flowering peak, petal length, flower spout diameter and petiole length were measured. Results showed that different concentrations of GA3 had no effect on the total flower count throughout the flowering period. The highest flower count during the flowering peak was achieved with 40 mg/l concentration of GA3. The floral display was also incredibly increased using this concentration of the GA3. Increase in GA3 concentration, resulted in decreasing the days from spraying to flowering peak. Use of 50 mg/l concentration of GA3, resulted in a minimum day count from spraying to flowering peak. On the other hand, this concentration of GA3, resulted in an inordinate of the increase petiole length, lowering the floral display. Petal size and flower spout diameter were not affected by different concentrations of gibberellic acid.