Abd Al Razzak Soud* (1) Mamoun Khaity (2) Sami Al Ghazali (1) Fadi Abu-Rukba(3) and Moead Almeselmani (4)
(1). Izraa Research Station, General Commission for Scientific Agricultural Research (GCSAR) , Izraa, Daraa, Syria.
(2). Department of Field Crops, Faculty of Agriculture, Damascus University, Syria.
(3). Daraa Research Center, (GCSAR) , Daraa, Syria.
(4). Department of biotechnology, (GCSAR), Damascus , Syria.
(*Corresponding author: Eng: Abd Al Razzak Soud, Izraa Research Station, General Commission for Scientific Agricultural Research (GCSAR) , Izraa, Daraa, Syria).
Received: 01/02/ 2015 Accepted: 04/04/ 2015
Six durum wheat varieties (Horany, Sham3, Sham5, Bouhouth 7, Bouhouth 11, and Doma1) were used to study the contribution of awns in grain yield. The experiment was carried out in Izraa Research Station, General Commission For Scientific Agricultural Research (GSAR), Daraa, Syria, during (2010/2011). Split plot design was used with three replications. The results showed a significant difference between varieties in percentage of awns contribution in grain yield. The percentage of awns contribution in grain yield for the control ranged between 7.22 – 11.93 % and increased to 14.84 – 21.16 % under drought conditions. Correlation coefficient between awn length and grain yield was positive, and high. The values of correlation coefficients were (*0.521, *0.695) for control and treatment, respectively at level of probability 0.05.
Key words: Durum wheat, Awn length, Drought, Grain filling.
Full paper in Arabic:مساهمة السفا في الغلة الحبية للقمح القاسي تحت ظروف الجفاف