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Allelopathic Effects of Sorghum Halepense (L.) Pers. and Avena Sterilis L. Water Extracts on Early Seedling Growth of Portulacca Oleracea L. and Medicago Sativa L.

التأثير الأليلوباثي للمستخلصات المائية لنباتي الرزين Sorghum Halepense (L.) Pers والشوفان العقيم .Avena Sterilis L في النمو المبكر لبادرات البقلة Portulacca Oleracea L. والفصة Medicago Sativa L.

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 Publication date 2018
  fields Life Science
and research's language is العربية
 Created by براءه عثمان




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Allelopathy uses, as target plants, the cultivated species that are sometimes considered useful for comparative analysis, but do not naturally co-exist with the donor species (Reigosa et al., 2013) . Therefore, the weed common purslane (portulaca oleracea) (Portulacaceae) was selected as a target in addition to alfalfa (Medicago sativa) (Fabaceae) to compare with it. Two worldwide distribution weeds: sterile oat (Avena sterilis), and Aleppo grass (Sorghum halepense) (Poaceae) were chosen as donor plants, Water extracts of donor plants were prepared, 2%,4%,8% concentrations were used and distilled water was used for control. Seed germination and early seedling growth of target plants were studied in petri dishes. Lengths of seedlings were measured, after that, following indicators were calculated: Relative seed germination (RSG), relative elongation ratio of Shoot (RERs) and root (RERr), Inhibition percentage of germination, shoot and root length (I), and root/shoot ratio. Means and standard deviation were calculated and means were statically analyzed with one – way ANOVA, LSD test was chosen to compare differences between treatment means at a probability levels (0.01, 0.05). The result showed that extracts had greater effects on seedling growth rather than on germination and all measurements were affected, extracts had inhibition effects on root length of the two tested species, shoot length of alfalfa, but a stimulation effect on shoot length of common purslane. All root / shoot ratios were significant in all treatments of common purslane, and alfalfa treated with Aleppo grass only, while the seed germination differences were generally non – significant, Aleppo grass extracts were more effective than that of sterile oat, and the effect generally increased by increasing concentration.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة التأثيرات الأليلوباثية لمستخلصات الماء من نباتي السورغم الحلبي (Sorghum halepense) والشوفان العقيم (Avena sterilis) على نمو البادرات المبكرة لنباتي الرجلة (Portulacca oleracea) والبرسيم (Medicago sativa). تم اختيار الرجلة والبرسيم كنباتات مستهدفة، بينما تم اختيار الشوفان العقيم والسورغم الحلبي كنباتات مانحة. تم تحضير مستخلصات الماء من النباتات المانحة بتركيزات 2%، 4%، و8%، واستخدام الماء المقطر كتحكم. تم دراسة إنبات البذور ونمو البادرات المبكرة في أطباق بتري، وتم قياس أطوال البادرات وحساب مؤشرات مثل نسبة الإنبات النسبي (RSG)، نسبة الاستطالة النسبية للجذر (RERr) والساق (RERs)، ونسبة التثبيط في الإنبات وطول الجذر والساق، ونسبة الجذر إلى الساق. أظهرت النتائج أن المستخلصات كان لها تأثير أكبر على نمو البادرات مقارنة بالإنبات، حيث كان لها تأثير تثبيطي على طول الجذر لنباتي الرجلة والبرسيم، وتأثير تحفيزي على طول الساق لنبات الرجلة. كانت مستخلصات السورغم الحلبي أكثر فعالية من مستخلصات الشوفان العقيم، وزاد التأثير بزيادة التركيز.
Critical review
دراسة نقدية: تقدم هذه الدراسة إسهامًا مهمًا في فهم التأثيرات الأليلوباثية للنباتات على نمو البادرات، ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن أن تشمل الدراسة مجموعة أوسع من النباتات المستهدفة لتوفير نتائج أكثر شمولية. ثانيًا، لم يتم التطرق بشكل كافٍ إلى الآليات الكيميائية التي تقف وراء التأثيرات الأليلوباثية، مما قد يحد من فهمنا الكامل لهذه الظاهرة. ثالثًا، كان من الممكن أن تكون الدراسة أكثر قوة إذا تم تنفيذها في ظروف بيئية متنوعة بدلاً من الظروف المخبرية فقط، مما يعزز من تطبيق النتائج في البيئات الطبيعية والزراعية. على الرغم من هذه النقاط، فإن الدراسة تقدم بيانات قيمة حول التأثيرات الأليلوباثية وتفتح المجال لمزيد من الأبحاث في هذا المجال.
Questions related to the research
  1. ما هي النباتات المانحة والمستهدفة التي تم استخدامها في الدراسة؟

    النباتات المانحة هي الشوفان العقيم والسورغم الحلبي، بينما النباتات المستهدفة هي الرجلة والبرسيم.

  2. ما هي المؤشرات التي تم قياسها في الدراسة؟

    تم قياس نسبة الإنبات النسبي (RSG)، نسبة الاستطالة النسبية للجذر (RERr) والساق (RERs)، ونسبة التثبيط في الإنبات وطول الجذر والساق، ونسبة الجذر إلى الساق.

  3. ما هو التأثير الذي لوحظ على طول الجذر لنباتي الرجلة والبرسيم؟

    لوحظ تأثير تثبيطي على طول الجذر لنباتي الرجلة والبرسيم.

  4. كيف كانت فعالية مستخلصات السورغم الحلبي مقارنة بمستخلصات الشوفان العقيم؟

    كانت مستخلصات السورغم الحلبي أكثر فعالية من مستخلصات الشوفان العقيم، وزاد التأثير بزيادة التركيز.


References used
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