Haidara Boissa(1)*, Mazen Nassour(2), and Fahed Sahuni(3)
(1). Tishreen University, Faculty of Agriculture, Lattakia , Syria
(2). Professor, Horticulture,Second Faculty of Agriculture, Aleppo University.Aleppo , Syria.
(3). Postgraduate Student (PhD), Horticulture, Faculty of Agriculture, Tishreen University.Lattakia , Syria.
(*Corresponding author: Haidara boissa. E-Mail: haidara.hhda@gmail.com )
Received: 10/12/2023 Accepted: 1/4/2024
Abstract:
The aim of this research was to study the effect of foliar spraying with the growth regulators gibberellin and alar in improving the quantity and quality of the essential oil extracted from the flowers and leaves of the Chrysanthemum plant, where the treatments were as follows: control treatment (T0), spraying with the alar growth regulator (500, 1000) ppm, and spraying With gibberellin acid (100, 150 ppm) and spraying with growth regulators (1000 ppm Alar and 150 ppm gibberellins). Field experiments were carried out in the village of Al-Dubaika – Al-Haffa District – Latakia Governorate – Syria, and laboratory experiments were carried out in the College of Agriculture – Tishreen University for two agricultural seasons (2019-2020) and (2020-202). The essential oil of the six samples was analyzed using gas chromatography technology connected to a mass spectrometer. The results showed that all treatments were significantly superior to the control treatment in the amount of essential oil for leaves and flowers, which did not exceed (0.76 and 0.61)%, respectively. The results also showed that the spraying treatment was superior to T5 was significantly different from the rest of the treatments in the average amount of essential oil in flowers and leaves by (0.96, 0.78)%, respectively. The results of the qualitative analysis of the oil of the grebe plant showed five basic chemical groups in the essential oil – a group of hydrocarbons, a group of esters, – a group of alcohols, a group of ketones, and a group of organic acids whose presence is limited to the essential oil of flowers. The results also showed the positive effect of joint spraying of growth regulators represented by treatment T5, as it was significantly superior to the rest of the treatments in the chemical composition of the essential oil extracted from the leaves and flowers.
Key words: Chrysanthemum – essential oil- GA3 – ALAR .
Full paper in Arabic: PDF