Osama Alabdalla(1), Rawaa Albabilie(1)* and Roula Bathoush(1) and Ramiz Hammady (2) and Loutfi Joureh(3)
(1). Administration of Horticulture Research, General Commission for Scientific Agricultural Research, Damascus, Syria.
(2). Al-Ghab Research Center, Damascus, Syria.
(3). Damascus Countryside Research Center, Damascus, Syria.
(*Corresponding author: Dr. Rawaa Albabilie, E-Mail: rawaababilie@gmail.com).
Received: 13/06/2023 Accepted: 10/08/2023
Abstract:
The experiment was carried out in General Commission for Agricultural Research, Taiba Research Station with the aim of studying the response of the red local onions variety to different concentrations and doses of mutagens (in two stages; the stage of planting seeds to produce sets and the stage of cultivating sets to produce bulbs). The Seeds were irradiated with five doses of Co 60 gamma rays (20, 40, 60, 80, 100 Gray), and they were treated with chemical mutagens, ethyl methane sulfonate (EMS) at concentrations (0.10, 0.20, 0.30%), and sodium azide (SA). At concentrations (0.1, 0.3, 0.5%) by soaking the seeds for /6/ hours, the experiment was designed according to the complete randomized design with (4 replicates) for each treatment. The results showed that the response of the red local onions variety to the effect of the dose (60 Gray) of gamma radiation was higher compared to the other applied doses, due to its positive (stimulating) effect on the vegetative characteristics, and this was reflected positively on its productive indicators of sets and bulbs (1.975, 1.935 kg/m2, respectively), which had significant difference compared with the rest of the treatments and the control (1.230, 1.333 kg/m2, respectively), and the results indicate that in relation to chemical mutagens, low concentrations positively stimulated vegetative growth indicators, and they gradually decreased with the increasing concentration.
Keywords: ethyl methane sulfonate, ma radiation, onion, sodium azide.
Full paper in Arabic: pdf