The Effect of IBA (Indol-3-Butyric Acid) Treatment on ‎Rooting of Some Damask Rose (Rosa damascena Mill.) ‎Rootstock Genotypes

Tharwat Salim Khaddour*(1) Hafiz Mohammad Mahfouz(1) and Mazen Ali Nassour(2)

(1). Scientific Agricultural Research Center of Lattakia, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(2). Department of Horticulture, Faculty of Agriculture, Tishreen University, Lattakia, Syria.

(*Corresponding author: Eng. Tharwat Saleem Redwan. E-Mail: 

Received: 26/06/2019                               Accepted: 27/09/2019


This study was conducted at glasshouse of ACSAD  nursery in Lattakia, during (2018 and 2019) using four genotypes of Rosa damascene (RD1, RD2, RD3 and RD4) treated with three different concentrations of IBA i.e.500, 1000 and 2000 ppm in addition to the control treatment 0 ppm, in order to determine the best concentration of IBA. The experimental design was randomized complete block design with two factors in four replicates. The results indicated that the use of  IBA encouraged the rooting at different rates according to the genotype and the concentration of IBA. Treatments (1000 and 2000) ppm were significantly higher than the other treatments in rooting rate (%(89.8- 88.27 respectively. The response of the rootstocks to IBA differed according to the studied genotypes. Genotypes RD1 and RD2 were superior when treated with 2000 ppm concentration in root percentage (90.2- 90.3)%, callus creation (80- 81)%, root number (8 and 8.1) and root length (5.41 and 5.4) cm respectively.

Keywords: Rosa damascena, Propagation, rootstock, Auxin IBA, Genotypes.

Full paper in Arabic: PDF