Tag Archives: Primitive Wheat

Selection‏ ‏of Tetraploid Primitive Wheat Genotypes Tolerant ‎to Drought Stress ‎

Yaman Jabbour*(1) Mohammad Shafik Hakim(1) Filippo M Bassi(2) Abdallah Al-Yossef(3)  Maysoun M. Saleh(3) Ahmad Shams Al-Dien Shaaban(4)

(1). Department of Field Crops, Faculty of Agriculture, Aleppo University, Aleppo, Syria.

(2). International Center for Agriculture Research in the Dry Areas (ICARDA), Aleppo, Syria.

(3). General commission for scientific Agriculture research (GCSAR), Damascus, Syria.

(4). Department of Biotechnology Engineering, Faculty of Technological Engineering, Aleppo University, Aleppo, Syria.

(*Corresponding author: Eng. Yaman Jabbour. E-Mail: yaman.jab@gmail.com).

Received: 17/05/2019                               Accepted: 15/07/2019

Abstract

The study was carried out during 2016/2017 season at AL-Sfira location which belongs to the Scientific Agriculture Research Center in Aleppo. The study aimed to select drought tolerant tetraploid primitive wheat genotypes. 22 genotypes of tetraploid primitive wheat belong to three types were: T. polonicum, T. carthlicum and T. dicoccom in addition to 2 cultivar; Cham5 and Bohouth7 as control that were planted in two trials (water-stress) and (un-water stress) in a randomized complete block design with two replications. Grain yield were studied and the percentage of reduction was estimated as a result of water stress. Drought tolerance indices were assessed, also viz. Yield Stability Index (YSI), Tolerance Index (TOL), Mean Productivity (MP), Geometric Mean Productivity (GMP), Stress Susceptibility Index (SSI) and Stress Tolerance Index (STI). The correlations between drought tolerance indices and grain yield under both conditions were estimated for determining the most effective indices which were used to estimate Principle Component Analysis of genotypes, in addition, a Genotype Environment Interaction analysis was conducted. The results showed that the drought stress reduced grain yield for all genotypes significantly, the lowest decrease was recorded for T. polonicum (N.16) 21.44% which had the highest yield under drought stress (380 g/m2), and the most effective indices were (GMP MP and STI) for drought tolerance selection genotypes, and according to the values of drought tolerance indices the two genotypes 16 and 19 were the best genotypes followed by (20, 21). Principal Component Analysis revealed that the genotypes (16, 19, 20 and 21) were the best genotypes under the two treatments, and this conclusion was confirmed by genotype environment interaction analysis, which showed that the best genotypes were T.carthilicum (N. 20) and T. polonicum (N.16) in terms of yield and stability under study environments.

Key wards: Primitive wheat, Selection, Drought tolerance indices, Genotype environment interaction, Principle component analysis.

Full paper in Arabic: PDF

Performance of Some Primitive Wheat Genotypes and Correlation coefficient of Some Yield Components Under Rainfed Condition in Syria

Maysoun Muhammad saleh*(1) and Dyab Salem Moussa(2)

(1). Genetic Resources Department, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(2). Scientific Agricultural Research Center of Al-Ghab, (GCSAR), Hama, Syria.

(*Corresponding author: Dr. Maysoun Muhammad Saleh, Genetic Resources Department, (GCSAR), Damascus, Syria. Mobile phone: +963 0999312298).

Received: 19/04/2015                                      Accepted: 14/05/2015

Abstract

The study was conducted at Al-Ghab Research Centre, General Commission for Scientific Agricultural Research (GCSAR), Hama, Syria, during two growing seasons 2012/2013 and 2013/2014. Eight primitive wheat genotypes; C49, C57,and C64 belongs to Ttiticum carthlicum; P149,and P193 belongs to Ttiticum polonicum; D94, D124,  and D67 belongs to Ttiticum dicoccom, and two local cultivated varieties sham3, and sham5 (as control) were planted in randomized complete block design in three replications. Yield components (number of fertile tillers, number and weight of grains per spike and weight of thousand grain) were studied and compared to the  control and also the correlation coefficient  between the studied traits was determined. Results showed that the genotype D94 was significantly superior in number of fertile tillers comparing to both controls, and the genotype P194 was significantly superior in weight of grains per spike with an increase rate (76.65, 97.99)% as compared with both controls, sham3, and sham5, respectively, and also was significantly superior in weight of thousand grain with  an increase rate (72.73, 107.28)% as compared with both controls; sham3, and sham5 respectively. The results also showed a positive correlation between number of grains per spike and with each of weight of grains per spike and weight of thousand grain.

Key Words: Genotypes, Primitive wheat, Yield components, Correlation coefficient.

Full paper in Arabic: سلوك عدة طرز من القمح المبدئي ومعامل الارتباط لبعض مكونات الغلة ضمن ظروف الزراعة المطرية في سورية

 

 

Regression Between Number of Productive and Quality Components of some Primitive Wheat Genotypes under Rainfed Condition

Maysoun Saleh(1) Yousef Wjhani*(1) and Mokhles Shaherli(2)

(1) Genetic Resources Department, General Commission for Scientific Agricultural Research (GCSAR). Damascus, Syria.
(2) Agronomy Department, Faculty of Agriculture, Damascus University. Damascus, Syria.(*corresponding author: Dr. Yousef Wjhani, Genetic Resource Department, (GCSAR), Damascus, Syria. E-mail: yowj2015@hotmail.com).

Received: 17/07/2014                         Accepted: 11/02/2015

Abstract

The study was conducted at Izraa Research Station and Cereal Technology Lab of The General Commission for Scientific Agricultural Research (GCSAR) in Syria, during two growing seasons 2009/2010 and 2010/2011. Fifteen local and entries genotypes and three local cultivated varieties were planted in Randomized Complete Block Design RCBD in three replications, Correlations and Regressions between number and weight of grains per spike with quality components contents in grains were studied after harvest. Results showed that number of grains per spike had a negative and significant correlation with each of protein content and wet gluten content and sedimentation rate, while it was positive with starch content in grains. Weight of grains per spike had a negative and significant correlation with each of protein content and wet gluten content. Results showed that all regression relations were negative and significant, thereby breeding programs for increasing number of grains per spike will cause a reduction in each of protein content and wet gluten content and sedimentation rate about (36, 17, 17%) respectively, while breeding program for increasing grain weight per spike will negatively affect protein and wet gluten content in grains about (28, 14%), respectively.

Key Words: Productivity components, Quality components, Correlation, Regression, Genotypes, Primitive Wheat.

 Full paper in Arabic : علاقات الانحدار بين عدد من المكونات الإنتاجية والنوعيّة لطرز من القمح المبدئي ضمن ظروف الزراعة المطرية