Haidara boissa⁽¹⁾* , Mazen nassour⁽¹⁾ and Fahed Sahuni⁽²⁾

(1). , Faculty of Agriculture, Tishreen University.Lattakia , Syria.

(2). Horticulture, Second Faculty of Agriculture, Aleppo University.Aleppo , Syria.

(*Corresponding author: Haidara boissa, E-Mail: haidara.hhda@gmail.com)

Received: 14/08/2023                 Accepted: 8/10/2023

Abstract: 

The research was conducted in Lattakia, Department of Horticulture, Faculty of Agriculture, Tishreen University, during two seasons (2019-2020) and (2020-2021). The aim of the research was to study the effect of foliar spray with gibberellin acid (100,150) ppm, ALAR (1000,1500) ppm and both of them together in vegetative growth and flowering of the plant, the experiment was laid out in complete block design with three replications and six treatments, as a 30 plant per replicate. The results showed the positive effect of the growth regulator on the development of the vegetative and flowering parameter, Especially when we used a top concentration of   GA₃ (150) ppm and minimum concentration of ALAR  (1000) ppm, so it achieved joint spraying treatment (T7:GA₃ 150ppm, ALAR 1500 ppm) showed the best results in terms of growth (number of leaves, leaf area, fresh weight, dry weight, percentage of dry matter and the amount of total chlorophyll), as well as the formation and evolution of flowering (early flowering, number of flower stem, total number of flowers, number of flower per stem and floral diameter).

Key words: Chrysanthemum , GA₃ , ALAR ,Cut flower

Full paper in Arabic: pdf