Georges Makhoul⁽¹⁾* and Rabab Dauob⁽¹⁾

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

(*Corresponding author: Dr. Georges Makhoul, Email: georges.makhoul@tishreen.edu.sy)

Received:26/09/2022                 Accepted:22/01/2023

Abstract: 

The research was carried out in the nursery of Tishreen University and laboratories of the Faculty of Agriculture to study the effect of soaking with gibberellic acid and stratification treatments, on extracting the embryos of seeds of the “Starking delicious apple” cultivar from their dormancy stage, and on increasing their germination percentage. The results showed that the cold and wet stratification at 5 ± 2̊C for 60 days after soaking with gibberellic acid at a concentration of 500 ppm for 24 hours led to an increase in seed germination percentage of Starking Delicious apple cultivar from 7.78% in the control to 76.67% as an average for the two studied years, followed by the stratification treatment for 90 days with a germination rate of 70.00% without any significant difference between them. The stratification treatment for 60 days after soaking with gibberellic acid at a concentration of 250 ppm for 24 hours and for 45 days after soaking with gibberellin acid at a concentration of 500 ppm for 24 hours revealed a germination percentage of 57.78% and 55.55% for each of them without any significant difference between them.

Keywords: Apples, “Starking delicious”, seeds germination, Scarification, GA3, Dormancy.

Full paper in Arabic: pdf