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Physiological study of salinity stress in some potato varieties(Solanumtuberosum)

دراسة مدى تحمل بعض أصناف البطاطا tuberosum Solanum المزروعة محلياً للإجهاد الملحي

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 Publication date 2012
  fields Groves
and research's language is العربية
 Created by Shamra Editor




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This study was conducted at Abo Jarash farm, Faculty of Agriculture, Damascus University In order to determine the response of three local varieties of potato (Sponta, Draja, Diamont) to salinity stress with different concentration of NaCl solution (0,50, 100, 150, 200 mM). The results indicated that the existence of a inverse correlation between increased concentrations of salts in the solution and the rate of plant height, leaf area, and the percentage of leaf dry weight, and the proportion K+/ Na+., and the productivity was declined with a proportional rate 22< 32, and 48% for the varieties of Sponta, Draja, Diamont, respectively. Results indicated the existence of reverse relationship between increasing salt concentration in the medium and plant height, Leaf area, dry weight of the leaves and K+/Na+ ration in addition to the decline in the productivity of studied varieties. The results also showed variations in the extent of tolerance between studied varieties to salinity stress where Sponta was the most tolerant, followed by Draja and Diamont was the less tolerant and this was reflected in terms of higher germination and increasing the mean of plant height, Leaf area and dry weight of plant.


Artificial intelligence review:
Research summary
تتناول الدراسة استجابة ثلاثة أصناف من البطاطا (سبونتا، دراجا، وديامونت) للإجهاد الملحي بتراكيز مختلفة من محلول NaCl (0، 50، 100، 150، 200 mM). أظهرت النتائج وجود علاقة عكسية بين زيادة تركيز الأملاح وطول النبات، المساحة الورقية، الوزن الجاف للأوراق، ونسبة K+/Na+. كان صنف سبونتا الأكثر تحملًا للإجهاد الملحي، يليه دراجا، ثم ديامونت الذي كان الأقل تحملًا. تم تنفيذ التجربة في مزرعة أبي جرش التابعة لكلية الزراعة بدمشق خلال الموسم الزراعي 2009-2010. تم قياس عدة مؤشرات مثل المساحة الورقية، الوزن الجاف للأوراق، طول النبات، محتوى الماء النسبي، ومحتوى الأوراق من شوارد الصوديوم والبوتاسيوم. أظهرت النتائج أن زيادة تركيز الأملاح تؤدي إلى انخفاض في جميع المؤشرات المدروسة، مع تفاوت في درجة التحمل بين الأصناف الثلاثة. توصي الدراسة بانتخاب الأصناف الأكثر تحملًا للإجهاد الملحي لاستثمارها في الزراعة في المناطق المتملحة.
Critical review
دراسة نقدية: تعد هذه الدراسة مهمة لفهم تأثير الإجهاد الملحي على نمو وتطور البطاطا، خاصة في المناطق الجافة والمتملحة. ومع ذلك، يمكن توجيه بعض الانتقادات البناءة لتحسين البحث. أولاً، كان من الأفضل تضمين أصناف بطاطا أخرى لتوسيع نطاق النتائج. ثانيًا، يمكن تحسين دقة النتائج باستخدام تقنيات تحليلية أكثر تطورًا مثل التحليل الجيني لتحديد الجينات المسؤولة عن تحمل الملوحة. ثالثًا، لم يتم التطرق بشكل كافٍ إلى تأثير الملوحة على جودة الدرنات المنتجة، وهو جانب مهم يجب مراعاته في الدراسات المستقبلية. أخيرًا، يمكن تحسين تصميم التجربة بإضافة مكررات أكثر لضمان دقة النتائج وتقليل التباين.
Questions related to the research
  1. ما هي الأصناف الثلاثة من البطاطا التي تم دراستها في البحث؟

    الأصناف الثلاثة هي سبونتا، دراجا، وديامونت.

  2. ما هي العلاقة بين تركيز الأملاح وطول النبات؟

    هناك علاقة عكسية بين زيادة تركيز الأملاح وطول النبات.

  3. أي صنف من البطاطا كان الأكثر تحملًا للإجهاد الملحي؟

    كان صنف سبونتا الأكثر تحملًا للإجهاد الملحي.

  4. ما هي المؤشرات التي تم قياسها في الدراسة؟

    تم قياس المساحة الورقية، الوزن الجاف للأوراق، طول النبات، محتوى الماء النسبي، ومحتوى الأوراق من شوارد الصوديوم والبوتاسيوم.


References used
AZevedo, B. and F. Ashraf. 2009. Effects of salt stress on growth mineral and praline Accumulation in relation to osmotic adjustment in potata(Solanum tuberosum L.) cultivars differing in salinity tolerance, Plant Growth Regul. 19: 207-218
Bohnert, B., Shen. and M. Bray. 2001. Mineral nutrition of higher plants, Academic press, London
Chaerle, L. 2005. leaf anatomical characteristics associated with shot hydraulic conductance, stomatal conductance and stomatal sensitivity to changes of leaf water status in temperate trees. J. Plant Physiol. 28:765-774
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