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Estimation of statistical genetic parameters and heritability for oil, protein and yield traits in soybean hybrids (Glycine max (L.) Merr.)

تقدير المعايير الوراثية و درجة التوريث لصفات الزيت و البروتين و الغلة في هجن من فول الصويا

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




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The present study was conducted at the First of May Station belongs to the General Commission For Scientific Agricultural Research (GCSAR) at Damascus during 2011 and 2012 growing seasons to estimate gene action, heritability, genotypic and phenotypic coefficient variations (GCV, PCV) and genetic advance for two crosses of soybean. The five population (P1, P2, F1, F2, F3) of each cross were grown in a randomized complete block design (RCBD) with three replications in order to evaluate oil and protein contents and seed yield traits. Results of mean square analysis showed significant differences (p<0.05) among mean values of the five populations for all studied traits between the populations of each cross. The second cross achieved high broad and narrow sense heritability (66%, 44%) for protein content, high value of phenotypic and genotypic variations in seed yield in the second cross achieved (18.03,17.30) and high value of expected genetic advance was obtained 11.09%. In most traits, epistasis of the dominance × dominance type of gene action occupied the first rank in order of importance in controlling inheritance of the evaluate traits in both crosses indicating the importance of selection in late segregating generations to improve these traits. These findings are supported by high values of heritability, which was related with low to moderate expected genetic advance in two crosses.


Artificial intelligence review:
Research summary
أجريت الدراسة في محطة بحوث واحد أيار التابعة للهيئة العامة للبحوث العلمية الزراعية في دمشق خلال الموسمين 2011 و2012، بهدف تقدير الفعل المورث ودرجة التوريث والتقدم الوراثي لهجينين من فول الصويا. زرعت العشائر النباتية الخمس لكل هجين (P1، P2، F1، F2، F3) في تجربة بتصميم القطاعات الكاملة المعشاة بثلاث مكررات لتقييمها بالنسبة لصفات نسبة الزيت ونسبة البروتين والغلة البذرية. أظهرت نتائج تحليل التباين وجود فروق معنوية بين عشائر كل هجين لكل الصفات المدروسة. حقق الهجين الثاني أعلى قيمة لدرجة التوريث بالمعنيين الواسع والضيق (66%، 44%) لمحتوى البروتين، وأعلى قيم للتباين المظهري والوراثي في صفة غلة النبات الفردي (18.03، 17.30) على الترتيب. كما حقق الهجين الثاني أعلى قيمة للتقدم الوراثي المتوقع بالانتخاب (11.09%). أشارت النتائج إلى أهمية الفعل المورث التقوقي من النمط سيادي × سيادي في التحكم بوراثة الصفات المدروسة، مما يشير إلى أهمية الانتخاب في الأجيال الانعزالية المتأخرة لتحسين هذه الصفات.
Critical review
دراسة نقدية: الدراسة تقدم معلومات قيمة حول الفعل المورث ودرجة التوريث والتقدم الوراثي في هجن فول الصويا، مما يساهم في تحسين برامج التربية النباتية. ومع ذلك، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تضمنت تحليلاً أعمق لتأثير العوامل البيئية على الصفات المدروسة. كما أن الاعتماد على موسمين فقط قد لا يكون كافياً لتقديم نتائج دقيقة وثابتة. بالإضافة إلى ذلك، كان من الممكن أن تكون الدراسة أكثر فائدة إذا تضمنت مقارنة مع نتائج دراسات سابقة في مناطق أخرى أو تحت ظروف بيئية مختلفة.
Questions related to the research
  1. ما هي الأهداف الرئيسية للدراسة؟

    هدفت الدراسة إلى تقدير الفعل المورث ودرجة التوريث والتقدم الوراثي لهجينين من فول الصويا بالنسبة لصفات نسبة الزيت ونسبة البروتين والغلة البذرية.

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج وجود فروق معنوية بين عشائر كل هجين لكل الصفات المدروسة، وحقق الهجين الثاني أعلى قيمة لدرجة التوريث بالمعنيين الواسع والضيق لمحتوى البروتين، وأعلى قيم للتباين المظهري والوراثي في صفة غلة النبات الفردي، وأعلى قيمة للتقدم الوراثي المتوقع بالانتخاب.

  3. ما هو الفعل المورث الذي كان له الأهمية الأكبر في التحكم بوراثة الصفات المدروسة؟

    الفعل المورث التقوقي من النمط سيادي × سيادي كان له الأهمية الأكبر في التحكم بوراثة الصفات المدروسة.

  4. ما هي التوصيات التي قدمتها الدراسة بناءً على النتائج؟

    أوصت الدراسة بأهمية الانتخاب في الأجيال الانعزالية المتأخرة لتحسين الصفات المدروسة في هجن فول الصويا.


References used
Allard, R. W. 1960. Principles of plant breeding. New York, John Wiley, PP. 485
Aravind, G.2006. Genetic Variability and Diversity Studies in Soybean [Glycine max (L.) Merrill] .PhD. thesis. College of Agriculture، Dharwad University of Agricultural Sciences
Barona, M. A. A., J. M C. Filho, V. S. Santos and I. O. Geraldi. 2012. Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill]. Crop Breeding and Applied Biotechnology, 12: 231-236
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