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The effect of different concentrations of NaCl in seeds germination and early seedling growth of Lactuca plants cv. Kabous and Shinshar

تأثير مستويات مختلفة من كلور الصوديوم في إنبات البذور و مراحل النمو المبكرة لنبات الخس في صنفي كبوس و شنشار

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 Publication date 2013
and research's language is العربية
 Created by Shamra Editor




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This investigation was conducted at the laboratories of Horticulture Departments, Faculty of Agriculture to study the effect of different levels of salinity (NaCl) in the rate and the percentage of seed germination of lettuce, Lactuca sativa L. varieties: Shinshar and Kabous and to determine the seedling response to these levels of salinity with relative to root length, the length of the cold, fresh and dry weight of seedlings. NaCl was used at 0, 50, 100, 150 and 200 mM/l. Resulted showed that a gradual increase in salinity concentrations caused a gradual decline in all indicators studied in both cultivars. However, the plants of Kabous variety were less sensitive to the salinity and also higher than in the indicators studied for seedlings (rate of germination and percent, stems and roots length, fresh and dry weight of seedlings) under salt stress conditions.


Artificial intelligence review:
Research summary
هدفت هذه الدراسة إلى تقييم تأثير مستويات مختلفة من كلوريد الصوديوم (NaCl) على إنبات بذور ونمو بادرات صنفي الخس (Lactuca sativa L.) كبوس وشنشار. تم استخدام تراكيز مختلفة من NaCl (0، 50، 100، 150، 200 ميلي مول/لتر) وزرعت البذور في أطباق بتري وسقيت بالمحاليل الملحية المختلفة. أظهرت النتائج أن زيادة تركيز الملوحة تؤدي إلى انخفاض تدريجي في نسبة الإنبات، معدل الإنبات، طول الجذور، طول السويقة الجنينية السفلى، الوزن الطازج والجاف للبادرات في كلا الصنفين. ومع ذلك، تبين أن صنف كبوس أقل حساسية للملوحة مقارنة بصنف شنشار، حيث تفوق في جميع المؤشرات المدروسة تحت ظروف الإجهاد الملحي. تم تحليل البيانات باستخدام برنامج SPSS واستخدم اختبار دونكان للمقارنة بين المتوسطات.
Critical review
دراسة نقدية: الدراسة قدمت معلومات قيمة حول تأثير الملوحة على إنبات ونمو بادرات الخس، ولكن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن توسيع نطاق الدراسة ليشمل أصناف أخرى من الخس أو نباتات أخرى لتحسين الفهم العام لتأثير الملوحة. ثانياً، لم تتطرق الدراسة إلى الآليات الفسيولوجية والبيوكيميائية التي تفسر تفوق صنف كبوس على صنف شنشار تحت ظروف الملوحة، مما يترك فجوة في الفهم العميق للنتائج. أخيراً، كان من الممكن استخدام تقنيات حديثة مثل تحليل الجينات أو البروتينات لتقديم تفسير أكثر دقة لتأثير الملوحة على النباتات.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي هو دراسة تأثير مستويات مختلفة من كلوريد الصوديوم على إنبات بذور ونمو بادرات صنفي الخس كبوس وشنشار.

  2. ما هي التراكيز المستخدمة من كلوريد الصوديوم في التجربة؟

    التراكيز المستخدمة هي 0، 50، 100، 150، و200 ميلي مول/لتر.

  3. أي صنف من الخس كان أقل حساسية للملوحة؟

    صنف كبوس كان أقل حساسية للملوحة مقارنة بصنف شنشار.

  4. ما هي المؤشرات التي تم قياسها في الدراسة؟

    المؤشرات التي تم قياسها هي نسبة الإنبات، معدل الإنبات، طول الجذور، طول السويقة الجنينية السفلى، الوزن الطازج والجاف للبادرات.


References used
Ashraf, M. and A. Orooj. 2006. Salt stress effects on growth on accumulation and seed oil concentration in an arid zone traditional medicinal plant ajwain (Trachyspermum ammi L. Sprague). Journal of Arid Environments, 4: 209– 220
Bartha, C. 2012. Comparative study of physiological and molecular manifestations of salt stress tolerance in different intraspecific varieties of Lactuca sativa L. PhD Dissertation. Babes-Bolyai University (Faculty of Biology and Geology). Cluj-Napoc, Romania
Bartha, R. 1991. Microbial Ecology, In: Fundamental and Applications. Reading Addison Wesley
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The objective of this study is to compare the effect of five different Nacl concentration (0,50,100,150,200 mM) on seeds germination and seedling growth of two cultivars of soybean (sb-44,sb-172). Seeds were germinated in petri dishes with sterile filter paper moistened with 10 ml of test solution at 25 c˚ in dark . The obtained results showed that germination percentage , length of root and hypocotyl were decreased with the increase of the Nacl concentration in the medium. The best values was from cultivar sb-44 . After seven days of incubation , significant differences were observed between control and treated seeds . Germinated seeds were subcultured on basal Murashige and Skoog medium solid at the same Nacl concentration . The roots growth was mor affected by 200 mM Nacl compared to seedling growth . Plantlets were transfered into pots with nutrient soil , irrigated with saline water and were adapted at laboratory . we obtained good plants grew to maturity in 10- 12 weeks .
The objective of this study is to compare the effect of five different Nacl concentration (0,50,100,150,200 mM) on seeds germination and seedling growth of two cultivars of soybean (sb-44,sb-172). Seeds were germinated in petri dishes with sterile filter paper moistened with 10 ml of test solution at 25 c˚ in dark . The obtained results showed that germination percentage , length of root and hypocotyl were decreased with the increase of the Nacl concentration in the medium. The best values was from cultivar sb-44 . After seven days of incubation , significant differences were observed between control and treated seeds . Germinated seeds were subcultured on basal Murashige and Skoog medium solid at the same Nacl concentration . The roots growth was mor affected by 200 mM Nacl compared to seedling growth . Plantlets were transfered into pots with nutrient soil , irrigated with saline water and were adapted at laboratory . we obtained good plants grew to maturity in 10- 12 weeks .
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