Mazen Nassour (1) and Hussam Hdaiwah* (1)
(1). Department of Horticulture, Faculty of Agriculture, Tishreen University, Latakia, Syria.
(*Corresponding author: Dr. Hussam Hdaiwah , E-mail: Hussam. hdaiwah76@gmail.com)
Received: 24 /09/2023 Accepted: 27 /11/2023
Abstract:
The research was carried out in Lattakia in cooperation with the Horticulture,soil and water sciences departments in Tishreen University, Faculty of Agriculture during the season (2020-2021). This research aimed to study the effect of the use of Gibberellic acid with three levels (50,100,150 ppm)and Benzyladinine with three levels (25,50,100 ppm) on vegetative growth ,flowering production, and formation of new cormels of Freesia ( Freesia hybrida,cv. Yellow freesia old fashion), Gibberelline and Benzyladinine were used spraying on vegetative part two times, 30 days after planting and one month after the first one. The experiment was designed by the complete blocks design with seven treatments and three replicates,30 plants at replicate. The results showed a positive effect of Gibberelline and Benzyladinine with high levels on vegetative growth, It also showed a positive effect on flowering,and increasing size and number of cormels on plant. The effect of Benzyladinine at increasing average number of leaves on the plant (8.53 leaf) better than Gibberelline (7.95 leaf), but the effect of Gibberelline was clear on surface foliage (398.7 cm2 )and foliage index (2.66). Benzyladinine showed high effect at increasing of total chlorophyll(4.64 mg/g) compared with Gibberelline(3.89 mg/g). Benzyladinine treatments showed superiority on Gibberelline treatments in most of flowering parameters (number of spikes, number of flowers by spike,flower length). Benzyladinine treatments recorded higher values of cormels yield (7.33 cormel/plant) compared with Gibberelline (4.21 cormel/plant)
Keywords: Freesia, Gibberelline GA3, Benzyladinine BA ,growth, productivity.
Full Paper in Arabic: pdf