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Evaluation of the performance of some wheat varieties under drought stress in tillering stage

تقييم أداء أصناف من القمح القاسي المعرضة للإجهاد المائي في مرحلة الإشطاء

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 Publication date 2015
and research's language is العربية
 Created by zeina alrostum




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This research was conducted at Izraa research station of The General Commission for Scientific Agricultural Research during the growing season 2010/2011 to study the performance of six durum wheat varieties at early growth stage under water deficit stress. The experiment was designed using randomized complete block design with three replication. The statistical analysis results of the experiment clearly showed genetic variations among cultivars under water stress. Drought stress caused a depression in all studied traits. Mean yield decreased in average 31.7 %. The number of spiks/ m2 was the most trait affected by drought stress, It decreased in average 29.1% while biological yield decreased in average 24.26%. It was observed that the number of spikes per m2 was the highest in the variety Hourani (191) and the highest number of grain per spike (34.1) whereas the variety Bohouth7 and the variety hourani recorded the highest thousand grain weight (40.5 g). The statistical analysis results showed that the variety Cha5 a achieved the highest grain yield per m2 (239.4 g), whereas, the variety Bohouth7 recorded the lowest grain yield per m2 (182.8 g), under water deficit stress conditions.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة تقييم أداء ستة أصناف من القمح القاسي تحت ظروف الإجهاد المائي في مرحلة الإشطاء خلال الموسم الزراعي 2010-2011 في محطة البحوث العلمية الزراعية في إزرع، سوريا. أظهرت النتائج وجود تباين وراثي بين الأصناف في تحمل الإجهاد المائي، حيث تسبب الإجهاد المائي في تراجع جميع الصفات المدروسة. تراجع متوسط الغلة الحبية بنسبة 31.7%، وكان عدد السنابل/م² من أكثر الصفات تأثراً بالإجهاد المائي حيث تراجع بنسبة 29.1%. أظهر الصنف حوراني أعلى عدد من السنابل/م² (191 سنبلة/م²)، بينما سجل الصنف شام5 أعلى غلة حبية في المتر المربع (239.4 غ). النتائج تشير إلى أهمية البحث عن الطرز الوراثية التي تحافظ على ثباتية عالية لصفة عدد السنابل/م² تحت ظروف الإجهاد المائي.
Critical review
تعتبر هذه الدراسة مهمة جداً في مجال تحسين إنتاجية القمح القاسي تحت ظروف الإجهاد المائي، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن توسيع نطاق الدراسة لتشمل مواسم زراعية متعددة للحصول على نتائج أكثر دقة وشمولية. ثانياً، لم يتم التطرق بشكل كافٍ إلى الآليات الفسيولوجية التي تمكن بعض الأصناف من تحمل الإجهاد المائي بشكل أفضل من غيرها، مما قد يساعد في تطوير أصناف جديدة أكثر تحملاً. أخيراً، كان من الممكن استخدام تقنيات حديثة مثل التحليل الجيني لتحديد الجينات المسؤولة عن تحمل الإجهاد المائي.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو تقييم أداء ستة أصناف من القمح القاسي تحت ظروف الإجهاد المائي في مرحلة الإشطاء.

  2. ما هي أكثر الصفات تأثراً بالإجهاد المائي؟

    أكثر الصفات تأثراً بالإجهاد المائي هي عدد السنابل/م²، حيث تراجع بنسبة 29.1%.

  3. أي صنف أظهر أعلى غلة حبية في المتر المربع تحت ظروف الإجهاد المائي؟

    الصنف شام5 أظهر أعلى غلة حبية في المتر المربع تحت ظروف الإجهاد المائي (239.4 غ).

  4. ما هي التوصيات التي قدمتها الدراسة لتحسين تحمل القمح للإجهاد المائي؟

    توصي الدراسة بالبحث عن الطرز الوراثية التي تحافظ على ثباتية عالية لصفة عدد السنابل/م² تحت ظروف الإجهاد المائي، والاستفادة من هذه الطرز في برامج التربية للحصول على أصناف متحملة للجفاف.


References used
Amjad Ali, M, K. Jabran, SI. Awan, A. Abas, Z. Ehsanullah and M. Tuba. 2011. Moro-phsiologicaldiversity and its implications for improving drought tolerance in grain sorghum at different growth stages, Aust J Crop Sci 5(3):308 – 317
Blum, A. 2005. Mitigation of drought stress by crop management. Httpi // www. Plant stress. Com /articles / drought-m7 drought – m. htm
Bressan, R. A., D. E. Nelson, N. M. Iraki, P. C. Larson, N. K. Singh, P. M. Hasegawa and N. C. Carpita, 1990. Reduced cell expansion in cell walls of plant cells adapted NaCl, environmental injury to plantes CF. Katter maned. J, Academic Press, San Diego, P. 137
Datta, J. K., T. Mondal, A. Banerjee and N. K. Mondal. 2011. Assessment of drought tolerance of selected wheat cultivars under laboratory condition. J Agri. Technol, 7: 383-393
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