Abstract

The investigation was conducted at the Bakrajo Technical Institute, Sulaimani Politechnic University located in the Kurdistan Region of Iraq, from 1th December to 1th April to examine the implication of various concentrations of IBA (0, 3000, 4000, and 5000 mg. L-) and types of cutting (semi-hardwood and hardwood) on the rooting process in the propagation of Myrtle cuttings. In the experimental investigation, treatments were organized, according to a completely randomized block design, encompassing three replications. The means were differentiated utilizing Duncan's multiple range tests at a significance level of 5%. The cuttings for this research were 120 cuttings were collected from the garden of the Bakrajo Technical Institute. In this study, the parameters evaluated included rooting percentage, root length, number of roots per cutting, shoot length, number of leaves per cutting, and shoot diameter.The findings revealed that the two different categories of cuttings exhibit in rooting efficacy across all parameters. Furthermore, elevated concentrations of IBA significantly cause a significant augmentation in the rooting percentage, shoot diameter, leaf number, and root length compared to the control treatment at significance. regarding The interactive effect of the two variables it was determined that cuttings subject to 5000 mg. L-1 IBA with semi-hardwood cutting exhibited the highest (55%) rooting, and the most favorable root and shoot characteristics were attained in the identical interaction as well, shoot length (23.23 cm), shoot diameter (3.05 mm), leaf number (12.00 ), and root length (33.30 cm). In light of these results, we inferred that the type of cutting and the varying concentrations of IBA, had exerted differential effects on the rooting success of cuttings myrtle). Consequently, this study recommends the propagation of Myrtus indica through semi- hardwood cuttings treated with a 5000 mg-L-1 IBA solution.