Iftikhar Khalaf Abbas Aga^*(1)

(1). Faculty of Agriculture, AlFurat University, Deir Ezzor, Syria.

(*Corresponding author: Dr. Iftikhar Khalaf Abbas Aga. E-Mail: iftekharabbas55555@gmail.com).

Received: 15/11/2019                               Accepted: 27/01/2020

Abstract

A laboratory experiment was carried out at the laboratories of Field Crops Department, Faculty of Agricultural Engineering, Al-Furat University, during the growing season of 2016/2017 according to the randomized complete block design, in order to study the effect of different seed  seeds sizes on some growth traits, and productivity of the dry matter of sorghum (Sorghum bicolor L. Moench) var. (Izraa-7). The experiment included three sizes of the seeds viz. (3.0-3.5) mm (small), (3.6-4.0) mm (medium) and large (4.0) mm, besides three seed treatments; the control treatment which was (T1) and represented the dry seeds, (T2) where seeds were soaked with distilled water for (10) hours and (T3) where seeds were soaked with potassium chloride with a concentration of (4) g/L for (12) hours, with four replicates per treatment. The results showed the superiority of the treatment (T3) in the initial and final germination percentages, length of radical (cm), length of epicotyls (cm), dry weight of the seedling (mg), (74.0)% (84.8)% (11.79) cm (13.3) (cm) and (14.8) mg, respectively. Also the treatment of seeds with the larger seed size (4.0) mm outperformed the other treatments in the same previous indicators; initial germination percentage, and the final and the length of radical (cm), the length of epicotyls (cm), dry weight of the seedling (mg) as follow (71.03)%, (84.8)%, (11.0)%, (12.73) cm and (15.8) mg respectively. In terms of the interaction between the two factors, the treatment (T3) with the largest seed size (4.0) mm, outperformed the other treatments in initial and final germination percentages, length of radical (cm), length of epicotyls (cm) dry weight of the seedling (mg), as follow (77.4%), (88.2)%, (11.7) cm and (18.5) mg, respectively.

Key words: Growthstimulations, Germination, Sorghum, Growth traits.

Full paper in Arabic: PDF