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Estimation of heterosis and parents genetic behavior in some Sorghum hybrids utilizing cytoplasmic male sterility technique

تقدير قوة الهجين و سلوكية الآباء لدى بعض هجن الذرة البيضاء الناتجة عن تقانة العقم الذكري السيتوبلاسمي لصفتي الباكورية و الإنتاجية

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 Publication date 2003
and research's language is العربية
 Created by Shamra Editor




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This study was conducted at the General Commission Of Scientific Agricultural Research (GCSAR) for tow consecutive years, 2000-2001, to estimate the heterosis of some sorghum hybrids utilizing cytoplasmic male sterility technique, and to determine the behavior of the parents used in hybridization concerning their relation to the cytoplasmic male sterility. Hybrids were planted in a randomized complete block design, including 43 hybrids in tow replications. The results showed variation among parents characters, because they were selected from different environments and also differ in genetic components. positive heterosis was recorded form crosses involved foreign parents with local ones, or foreign hybridized with foreign. positive heterotic values for earliness and productivity were obtained . The genetic constitution of the male parent was assessed as R-line (restoring of the A-line), and B-line (maintainer of the A-line).


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Research summary
تهدف هذه الدراسة التي أجريت في الهيئة العامة للبحوث العلمية الزراعية (GCSAR) على مدار سنتين متتاليتين (2000-2001) إلى تقدير تأثير التهجين في بعض هجائن الذرة الرفيعة باستخدام تقنية العقم الذكري السيتوبلازمي، وتحديد سلوك الآباء المستخدمين في التهجين فيما يتعلق بعلاقتهم بالعقم الذكري السيتوبلازمي. تم زراعة الهجائن في تصميم القطاعات العشوائية الكاملة، وشملت 43 هجينة في تكرارين. أظهرت النتائج تباينًا بين خصائص الآباء، حيث تم اختيارهم من بيئات مختلفة وتختلف أيضًا في مكوناتها الجينية. تم تسجيل تأثير تهجين إيجابي من التهجينات التي شملت آباء أجانب مع محليين أو أجانب مع أجانب، وتم الحصول على قيم تهجين إيجابية فيما يتعلق بالتبكير والإنتاجية. تم تقييم التكوين الجيني للأب الذكر كخط استعادة للخط الأنثوي (R-line) وخط المحافظة على الخط الأنثوي (B-line).
Critical review
دراسة نقدية: تعد هذه الدراسة ذات أهمية كبيرة في مجال تحسين المحاصيل الزراعية، حيث تسلط الضوء على تأثير التهجين واستخدام تقنية العقم الذكري السيتوبلازمي في تحسين إنتاجية الذرة الرفيعة. ومع ذلك، يمكن الإشارة إلى بعض النقاط التي يمكن تحسينها في الدراسات المستقبلية. أولاً، كان من الأفضل تضمين مجموعة أوسع من الأصناف المحلية والأجنبية لزيادة تنوع العينة وتحقيق نتائج أكثر شمولية. ثانيًا، لم يتم التطرق بشكل كافٍ إلى التأثيرات البيئية المحتملة على نتائج التهجين، وهو ما يمكن أن يكون له تأثير كبير على النتائج النهائية. أخيرًا، كان من الممكن تقديم تحليل أكثر تفصيلاً للبيانات الإحصائية لتعزيز موثوقية النتائج وتقديم توصيات أكثر دقة للمزارعين والباحثين.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي من الدراسة هو تقدير تأثير التهجين في بعض هجائن الذرة الرفيعة باستخدام تقنية العقم الذكري السيتوبلازمي وتحديد سلوك الآباء المستخدمين في التهجين.

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج تباينًا بين خصائص الآباء وتم تسجيل تأثير تهجين إيجابي من التهجينات التي شملت آباء أجانب مع محليين أو أجانب مع أجانب، وتم الحصول على قيم تهجين إيجابية فيما يتعلق بالتبكير والإنتاجية.

  3. ما هي التوصيات لتحسين الدراسات المستقبلية؟

    توصي الدراسة المستقبلية بتضمين مجموعة أوسع من الأصناف المحلية والأجنبية، والتطرق بشكل كافٍ إلى التأثيرات البيئية المحتملة، وتقديم تحليل أكثر تفصيلاً للبيانات الإحصائية.

  4. ما هو التكوين الجيني للأب الذكر في الدراسة؟

    تم تقييم التكوين الجيني للأب الذكر كخط استعادة للخط الأنثوي (R-line) وخط المحافظة على الخط الأنثوي (B-line).


References used
(Aekatasanawan, C.; Jampatong, S.; Aekatasanawan, C. (1995). Research and development of a non-detasseled baby corn variety, 474p.194-201. Univ. Bangkok (Thailand
Ahnert, D.; Lee, M.; Austin, D.F.; Livini, C.; Woodman, W.L.; Openshaw, S.J.; Smith, J.S.C.; Porter, K.; Dalton, G. (1996). Gentic diversity among elite Sorghum inbred lines assessed with DNA markers and pedigree information. Crop Science (USA). (Sep-Oct1996). V. 36(5) p.1385-1392
Ahuja, V.P. and Mukherjee, B.K. (1988). Estimation of heterosis Parameters for yield and its components in maize. Annuals of Agric. Res. V. 9(1) p. 124- 128 [En, 19 ref.] Div. Genet. Indian Agric. Res. Inst. New Delhi 110012, India
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