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Evaluation the Response of Some Wheat Genotypes at Seedling Stage to Water Stress

تقويم استجابة بعض الطرز الوراثية من القمح ( .spp Triticum ) للإجهاد المائي في طور البادرة

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 Publication date 2004
and research's language is العربية
 Created by Shamra Editor




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This study was carried out at the Faculty of Agriculture, Damascus University, and ACSAD during the year 2001 – 2002 in order to assess the genetic variability of twenty wheat genotypes for osmotic stress tolerance by using PEG-6000 as a water stress induced tool. This trial aimed to develop a semi-natural rapid and effective screening technique in which the optimum induction as well as lethal levels of osmotic stress are well defined . The results revealed that the treatments –0.4 MPa and –1.5 MPa were the optimum induction and lethal levels of osmotic stress, respectively.


Artificial intelligence review:
Research summary
تستعرض هذه الدراسة التي أجريت في كلية الزراعة بجامعة دمشق والمركز العربي لدراسات المناطق الجافة والأراضي القاحلة (ACSAD) خلال العام 2001-2002، التباين الوراثي في استجابة عشرين طرازًا وراثيًا من القمح للإجهاد المائي المحرض باستخدام مادة PEG-6000. تهدف التجربة إلى تطوير تقنية غربلة سريعة وفعالة لتحديد المستويات المحرضة والمميتة المثلى من الإجهاد المائي. أظهرت النتائج أن المعاملة بمستوى -0.4 MPa كانت المستوى المحرض الأمثل، في حين كانت المعاملة بمستوى -1.5 MPa المستوى المميت الأمثل. أظهرت الطرز المتحملة للإجهاد المائي مثل (حماري أحمر، حوراني نووي، سيناتور كابيللي، جورجيت، حوراتي أيوبية) تراجعًا أقل في معدل النمو خلال فترة الإجهاد المائي وقدرة أكبر على استعادة النمو مقارنة بالطرز الحساسة للإجهاد المائي مثل (بلدية حمراء، ناب الجمل، شيحاني، حوراني علاي، حوراتي منتخب). تُعد صفة القدرة على استعادة النمو من المؤشرات البيولوجية المهمة في إبراز كفاءة التحمل الحقيقي للإجهاد المائي. كما أظهرت الدراسة أن التحريض الحلولي يزيد من قدرة البادرات على تحمل المستويات المميتة من الإجهاد المائي مقارنة بالتحريض الملحي (NaCl).
Critical review
دراسة نقدية: تقدم هذه الدراسة إسهامًا مهمًا في فهم التباين الوراثي في استجابة القمح للإجهاد المائي، وتطوير تقنيات غربلة فعالة. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، الدراسة تقتصر على مرحلة البادرة فقط، ومن المهم توسيع البحث ليشمل مراحل النمو المختلفة لضمان استمرارية النتائج. ثانيًا، لم يتم اختبار الطرز الوراثية في ظروف حقلية حقيقية، مما يجعل من الصعب تعميم النتائج على البيئات الزراعية الفعلية. أخيرًا، يمكن أن تكون هناك حاجة لمزيد من الدراسات حول تأثير الإجهاد المائي على الجوانب الفسيولوجية الأخرى للنباتات مثل إنتاج الحبوب وجودتها.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي من هذه الدراسة هو تقييم التباين الوراثي في استجابة عشرين طرازًا وراثيًا من القمح للإجهاد المائي المحرض باستخدام مادة PEG-6000 وتطوير تقنية غربلة سريعة وفعالة لتحديد المستويات المحرضة والمميتة المثلى من الإجهاد المائي.

  2. ما هي المستويات المحرضة والمميتة المثلى من الإجهاد المائي التي تم تحديدها في الدراسة؟

    تم تحديد المستوى المحرض الأمثل من الإجهاد المائي عند -0.4 MPa، والمستوى المميت الأمثل عند -1.5 MPa.

  3. ما هي الطرز الوراثية التي أظهرت أعلى قدرة على تحمل الإجهاد المائي؟

    الطرز الوراثية التي أظهرت أعلى قدرة على تحمل الإجهاد المائي هي حماري أحمر، حوراني نووي، سيناتور كابيللي، جورجيت، وحوراتي أيوبية.

  4. كيف يؤثر التحريض الحلولي مقارنة بالتحريض الملحي على قدرة البادرات على تحمل الإجهاد المائي؟

    أظهرت الدراسة أن التحريض الحلولي يزيد من قدرة البادرات على تحمل المستويات المميتة من الإجهاد المائي بشكل أفضل مقارنة بالتحريض الملحي (NaCl).


References used
Aesawy, A. M. (2000). Periodicity and prediction of annual surface air temperature over eastern Mediterranean. Bulgarian Journal of Meteorology and hydrology. Vol. 11, No. 1-2, pp. 36-45
Al-Ouda, A. (1999). Genetic variability in temperature and moisture stress tolerance among sunflower hybrids : An assessment based on physiological and biochemical parameters. Ph. D. thesis submitted to Crop Physiology Dept., UAS, Bangalore, India
Boubaker. M.; Yamada, T. (1995). Differential genotypic responses of spring wheat at early seedling growth to limited water conditions. Tropicultura vol. 3 (2) P. 50 – 53
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