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The light and temperature effect on the development of a mutated species of Saintpaulia ionantha

تأثير الضوء و الحرارة في تنامي إحدى طفرات نبات البنفسج الافريقي Saintpaulia ionantha

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 Publication date 1998
  fields Biology
and research's language is العربية
 Created by Shamra Editor




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The results of this study showed the important role of the light intensity compared with the light exposure time on coloring the new formed leaves, also this study had showed that the leaves are not affected by the different temperatures, and also that these plants showed a decrease in the different pigment substances in close proportions. Concerning the amount of proteins, the results have shown main differences in the protein bands between the mutated and the natural species, but we have found a decrease in the amount of proteins in the mutated species than in natural species.


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Research summary
تتناول هذه الدراسة تأثير الضوء ودرجة الحرارة على تطور نوع متحول من نبات البنفسج الأفريقي (Saintpaulia ionantha). أظهرت النتائج دورًا مهمًا لشدة الضوء مقارنة بمدة التعرض للضوء في تلوين الأوراق الجديدة، بينما لم تتأثر الأوراق بدرجات الحرارة المختلفة. كما أظهرت الدراسة انخفاضًا في المواد الصبغية المختلفة بنسب متقاربة. فيما يتعلق بكمية البروتينات، أظهرت النتائج اختلافات رئيسية في أشرطة البروتين بين النوع المتحول والنوع الطبيعي، مع انخفاض في كمية البروتينات في النوع المتحول مقارنة بالنوع الطبيعي. تم تنفيذ التجربة على 800 نبات تحت شروط مختلفة من الإضاءة ودرجات الحرارة، وتم تحليل الصبغات النباتية باستخدام تقنيات مثل HPLC والتحليل الكهربائي. أظهرت النتائج أن شدة الضوء لها تأثير كبير على تلوين الأوراق وتكوين الصبغات النباتية، بينما لم يكن لدرجات الحرارة تأثير كبير على ذلك.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في فهم تأثير العوامل البيئية على تطور النباتات، ولكن هناك بعض النقاط التي يمكن تحسينها. أولاً، لم يتم توضيح كيفية تأثير شدة الضوء على العمليات الفسيولوجية داخل النبات بشكل دقيق. ثانيًا، كان من الممكن توسيع نطاق الدراسة ليشمل أنواعًا أخرى من النباتات لمقارنة النتائج. ثالثًا، لم يتم التطرق إلى تأثير العوامل البيئية الأخرى مثل الرطوبة والتربة، والتي قد تكون لها تأثيرات مهمة أيضًا. بشكل عام، الدراسة تقدم معلومات قيمة ولكن تحتاج إلى مزيد من التعمق والتوسع في بعض الجوانب.
Questions related to the research
  1. ما هو الدور الذي يلعبه الضوء في تلوين أوراق نبات البنفسج الأفريقي المتحول؟

    أظهرت الدراسة أن شدة الضوء لها دور مهم في تلوين الأوراق الجديدة لنبات البنفسج الأفريقي المتحول، مقارنة بمدة التعرض للضوء.

  2. هل تأثرت أوراق النبات بدرجات الحرارة المختلفة؟

    لا، أظهرت الدراسة أن أوراق النبات لم تتأثر بدرجات الحرارة المختلفة.

  3. ما هي الفروقات في كمية البروتينات بين النوع المتحول والنوع الطبيعي من النبات؟

    أظهرت النتائج انخفاضًا في كمية البروتينات في النوع المتحول مقارنة بالنوع الطبيعي، مع وجود اختلافات رئيسية في أشرطة البروتين بين النوعين.

  4. ما هي التقنيات المستخدمة في تحليل الصبغات النباتية في هذه الدراسة؟

    تم استخدام تقنيات مثل HPLC والتحليل الكهربائي لتحليل الصبغات النباتية في هذه الدراسة.


References used
Bohmer. B.; (١٩٩٠): Schadlinge an Saintpaulia. Gartnerborse Gartenwelt
Jungnickel, F. und Gliemerothe ( ١٩٨٦ ) : In vitro - Depots vegetativ vermehrter Blútenpflanzen. wiss. ztschr. Fsu Jena, Math. - Natur wiss. R
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