Ammar Askarieh* ⁽¹⁾, Sawsan Suleiman ⁽²⁾,  and Mahasen  Tawakalna ⁽¹⁾

(1). General Commission for Scientific Agricultural Research, Damascus (GCSAR), Syria.

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

(*Corresponding author: Eng. Ammar Askarieh. E-Mail: ammar.ask89@gmail.com )

Received: 31/01/2021                     Accepted: 25/05/2021

Abstract

This study was conducted during (2019-2020)  at the General Commission for Scientific Agricultural Research laboratories, to assess pollen grains viability and germination capacity of four sweet cherry cultivars which spread in Al- Zabadani-Sargaya region. The pollen viability was estimated by tetrazolium chloride (TTC). The pollen was grown on 1% agar medium with (15 g sucrose + 5 ppm boric acid) and incubated at 24 ± 1 temperature for 24 hours, The results showed that pollen vitality of  (Sunburst and Lapins) cultivars was higher (63.8, 69.36 %), respectively, than pollen vitality of (Bing and Hardy giant) cultivars (50.78, 52.81 %), and as for the germination capacity,  the Sunburst pollen surpassed and its germination rate, reaching to (59.46%), followed by (Lapins) grains  (46.11%), while the germination percentage did not exceed (10.37 ,11.38  %) for (Bing and Hardy giant) cultivars. The results showed as well that pollen tube length was (1427.50 μm) for Sunburst cultivar, while it did not exceed (401 μm) for (Bing) cultivar.

Keywords: Sweet cherry, pollen grains, vitality, germination, tetrazolium chloride, pollen tube.

Full paper in Arabic: pdf