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Effect of salt-stress (NaCl) on growth indicators and chlorophyll content of SO4 Grape rootstock propagated in vitro

تأثير الإجهاد الملحي (NaCl) في بعض مؤشرات النمو ومحتوى اليخضور في أصل العنب SO4 المستزرع مخبرياً

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 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




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In this study, the effect of different concentrations of sodium chloride (NaCl) (0, 50, 100, 150 mM) on some physiological characteristics and some growth indicators of SO4 grape rootstock propagated in vitro was studied at the laboratories of General Commission for Scientific Agricultural Research (GCSAR), Damascus/Syria. Results indicated that the increase of NaCl concentration up to 100 mM in culture medium led to reduce the growth indicators (survival plants, average of the plant length and average number of buds) with significant differences when compared with the control plants after 4 weeks from culturing on multiplication media, while treatment with 150 mM of sodium chloride led to death of all plants. Using the concentrations 50 and 100 mM of NaCl also caused decreasing the total chlorophyll content in the leaves.


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Research summary
تتناول هذه الدراسة تأثير الإجهاد الملحي باستخدام تراكيز مختلفة من كلوريد الصوديوم (NaCl) على بعض الخصائص الفيزيولوجية ومؤشرات النمو لأصل العنب SO4 المستزرع نسيجياً في المختبر. أظهرت النتائج أن زيادة تركيز NaCl حتى 100 ميلي مول في وسط الزراعة أدى إلى انخفاض مؤشرات النمو مثل نسبة النباتات المتبقية، متوسط طول النبات، ومتوسط عدد العيون مقارنة بالنباتات الشاهدة بعد 4 أسابيع من الزراعة. بينما أدى التركيز 150 ميلي مول من NaCl إلى موت جميع النباتات. كما أدى استخدام التراكيز 50 و100 ميلي مول من NaCl إلى انخفاض محتوى الأوراق من اليخضور الكلي.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في مجال زراعة العنب وتحديد تأثير الإجهاد الملحي على نمو النبات. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الأفضل تضمين مزيد من التفاصيل حول كيفية تأثير الإجهاد الملحي على العمليات البيوكيميائية داخل النبات. ثانياً، يمكن توسيع نطاق الدراسة لتشمل أصناف أخرى من العنب لمعرفة ما إذا كانت النتائج متسقة عبر أنواع مختلفة. أخيراً، كان من الممكن استخدام تقنيات تحليلية أكثر تقدماً لقياس محتوى اليخضور والعناصر الأخرى في الأوراق.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي هو دراسة تأثير الإجهاد الملحي على بعض الخصائص الفيزيولوجية ومؤشرات النمو لأصل العنب SO4 المستزرع نسيجياً.

  2. ما هي التراكيز المختلفة من NaCl التي تم استخدامها في الدراسة؟

    تم استخدام تراكيز 0، 50، 100، و150 ميلي مول من NaCl.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج أن زيادة تركيز NaCl حتى 100 ميلي مول أدى إلى انخفاض مؤشرات النمو ومحتوى اليخضور، بينما أدى التركيز 150 ميلي مول إلى موت جميع النباتات.

  4. ما هي التوصيات المستقبلية التي يمكن استخلاصها من هذه الدراسة؟

    يوصى بإجراء دراسات إضافية تشمل أصناف أخرى من العنب واستخدام تقنيات تحليلية متقدمة لفهم تأثير الإجهاد الملحي على العمليات البيوكيميائية داخل النبات.


References used
Alleweldt, G., P. Spiegel and B. Reisch. 1990. Grapes (Vitis), Acta Horticulturae, 290: 289-327
Al-Saidi, I And B. Alawi. 1984. Effect of different concentrations of NaCl and CaCl2 on growth, dry weight and mineral elements of some grapevine cultivars (Vitis vinifera), Annals-of-agricultural-Science, 29:2, 971-988
Anguiano, C., H.A. Altube and M.W. Borys. 1989. Growth and yields of Vitis vinifera L. cultivars Ribier and green Hungarian in normal and saline soils. Revista-Chapingo, 13-16:62-63, 173-176
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