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Genetic Analysis of (F4) Generation From Four Crosses in Six Row Barley

التحليل الوراثي للجيل الرابع في أربعة تهجينات من الشعير سداسي الصفوف

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 Publication date 2010
and research's language is العربية
 Created by Shamra Editor




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The fourth fillial generation with their parents p1 and p2 for four crosses in six row barley (Hordium vulgare L.): Jezera1 x Badya, Tadmer x Arivat, Rehan x Bendict and Rum x Forest. The seeds were planted in 2007 using R.C.B.D. with four replications. The data were recorded for the traits; maturity time, number of spikes, spike length, grain yield, weight of 1000 grains and number of grains per spike, to estimate average degree of dominance, heritability and expected genetic advance from selection.. The results showed that over dominance were presence for the studied traits. The values of broad sense heritability were high for the studied traits in the all crosses. The values of narrow sense heritability were (1) high for number of spikes in the all crosses, maturity time, grain yield and spike length in the second and fourth crosses and weight of 1000 grains in the second cross(2) low for the weight of 1000 grains and number of grains per spike in the fourth cross.(3) moderately for the other traits. The results of this study indicated that selection will be effective to obtain superior strains in the four crosses for the studied traits except spike length and weight of 1000 grains in the second cross. Therefore recurrent selection will be suggested to increase the desirable genes.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة التحليل الجيني للجيل الرابع (F4) من أربعة تهجينات في الشعير سداسي الصفوف (Hordeum vulgare L.)، وهي Jezera1 x Badya، Tadmer x Arivat، Rehan x Bendict، وRum x Forest. تم زراعة البذور في عام 2007 باستخدام تصميم القطاعات العشوائية الكاملة (R.C.B.D) مع أربع مكررات. تم تسجيل البيانات لصفات مثل وقت النضج، عدد السنابل، طول السنبلة، محصول الحبوب، وزن 1000 حبة، وعدد الحبوب في السنبلة، لتقدير متوسط درجة السيادة، التوريث، والتقدم الجيني المتوقع من الانتخاب. أظهرت النتائج وجود سيادة فائقة للصفات المدروسة. كانت قيم التوريث بالمعنى الواسع عالية لجميع الصفات المدروسة في جميع التهجينات. كانت قيم التوريث بالمعنى الضيق عالية لعدد السنابل في جميع التهجينات، وقت النضج، محصول الحبوب، وطول السنبلة في التهجينين الثاني والرابع، ووزن 1000 حبة في التهجين الثاني. كانت قيم التوريث بالمعنى الضيق منخفضة لوزن 1000 حبة وعدد الحبوب في السنبلة في التهجين الرابع. كانت القيم متوسطة للصفات الأخرى. أشارت نتائج هذه الدراسة إلى أن الانتخاب سيكون فعالاً للحصول على سلالات متفوقة في التهجينات الأربعة للصفات المدروسة باستثناء طول السنبلة ووزن 1000 حبة في التهجين الثاني. لذلك، يُقترح الانتخاب المتكرر لزيادة الجينات المرغوبة.
Critical review
دراسة نقدية: تقدم هذه الدراسة تحليلاً شاملاً للصفات الجينية في الجيل الرابع من تهجينات الشعير سداسي الصفوف، مما يساهم في فهم أفضل لعملية الانتخاب وتحسين المحاصيل. ومع ذلك، يمكن أن تكون هناك بعض النقاط التي تحتاج إلى مزيد من التوضيح. على سبيل المثال، لم يتم توضيح العوامل البيئية التي قد تؤثر على النتائج بشكل كافٍ. بالإضافة إلى ذلك، قد يكون من المفيد تضمين المزيد من البيانات حول كيفية تأثير التهجينات المختلفة على الصفات الأخرى غير المدروسة في هذه الورقة. بشكل عام، تعتبر الدراسة قيمة ولكن يمكن تحسينها من خلال توسيع نطاق البحث وتقديم المزيد من التفاصيل حول العوامل المؤثرة.
Questions related to the research
  1. ما هي التهجينات الأربعة التي تم دراستها في هذه الورقة؟

    التهجينات الأربعة هي Jezera1 x Badya، Tadmer x Arivat، Rehan x Bendict، وRum x Forest.

  2. ما هي الصفات التي تم تسجيل البيانات لها في هذه الدراسة؟

    تم تسجيل البيانات لصفات مثل وقت النضج، عدد السنابل، طول السنبلة، محصول الحبوب، وزن 1000 حبة، وعدد الحبوب في السنبلة.

  3. ما هي القيم التي كانت عالية للتوريث بالمعنى الضيق؟

    كانت القيم عالية لعدد السنابل في جميع التهجينات، وقت النضج، محصول الحبوب، وطول السنبلة في التهجينين الثاني والرابع، ووزن 1000 حبة في التهجين الثاني.

  4. ما هو الاقتراح الذي قدمته الدراسة لزيادة الجينات المرغوبة؟

    اقترحت الدراسة الانتخاب المتكرر لزيادة الجينات المرغوبة.


References used
Allard, R. W. (1960). Principles of plant breeding. John Wiley and Sons, Inc,New York.:216
Comstok, R. E. and Robinson, H. F. (1948). The components of genetic variance in population of biparental progenies and their use in estimating the degree of dominance. 4:245-266
Eshghi, R. and Akhundova, E. (2009). Genetic analysis of grain yield and some agronomic traitsin hulless barley. African Journal of Agricul. Rese. 4: 1464- 1474
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