A Master’s thesis at the College of Agriculture, University of Kirkuk, discussed “The Physiological Effect of Some Plant Growth Regulators and Two Spraying Dates on Growth and Flowering Traits of Myrtle Plant, and the Extraction and Identification of Chemical Compounds in the Essential Oil of the Leaves” submitted by the student Bergul Hussein Khalil.
The study aimed to determine the physiological effects of plant growth regulators on the vegetative, flowering, and root growth characteristics of the myrtle plant. It also examined the effect of foliar spraying dates using plant growth regulators on these growth traits, and sought to identify the best interaction between the two factors and its influence on vegetative, flowering, and root characteristics. In addition, the study focused on identifying and separating the active chemical compounds in the essential oil extracted from myrtle leaves using GC-Mass technology and estimating their percentages for both spraying dates, as well as studying the effects of both factors on the percentage of active compounds in the leaves.
The study concluded that plant growth regulators had a significant positive effect on most of the studied traits compared to untreated control plants, confirming their importance in improving growth, flowering, and the chemical content of the plant.
