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Path Coefficient Analysis and Relative Importance of Some Fodder Yield Components in Pearl millet [Pennisetum glaucum (L.) R. Br.]

تحليل المسار و الأهمية النسبية لبعض مكونات الغلّة العلفية في محصول الدخن اللؤلؤي [.Pennisetum glaucum (L.) R. Br]

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 Publication date 2017
  fields Field Crops
and research's language is العربية
 Created by Shamra Editor




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This study was carried out at Kharabu Station, General Commission for Scientific Agricultural Research (GCSAR), during the growing seasons 2011 and 2012, to estimate phenotypic correlation, and path coefficient of some morphological and green fodder yield components (days to flowering, plant height (cm), number of leaves per plant, number of tillers per plant, and green fodder yield (ton/ha)). Fifteen pearl millet crosses resulted from half diallel mating system between six inbred lines. The experiment was arranged in a randomized complete block design (RCBD), with three replications.


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Research summary
تتناول هذه الدراسة تحليل معامل الارتباط المظهري وتحليل المسار لبعض الصفات الشكلية المكونة للإنتاج العلفي الأخضر في محصول الدخن اللؤلؤي. تم تنفيذ الدراسة في محطة خرابو التابعة للهيئة العامة للبحوث العلمية الزراعية في دمشق خلال موسمي 2011 و2012. شملت الدراسة 15 هجينًا ناتجًا عن التهجين نصف التبادلي بين ست سلالات نقيّة من محصول الدخن اللؤلؤي. أظهرت النتائج وجود علاقة ارتباط موجبة ومعنوية بين صفة الغلة من العلف الأخضر وكل من ارتفاع النبات وعدد الأوراق في النبات وعدد الإشطاءات في النبات. كما أظهر تحليل المسار أن هذه الصفات الثلاثة لها تأثير مباشر في الغلة العلفية. بلغت مساهمة هذه الصفات في تباين الغلة النهائية من العلف الأخضر 61.97%، مما يشير إلى إمكانية اعتمادها كمعايير انتخابية لتحسين غلة العلف الأخضر من محصول الدخن اللؤلؤي في سوريا خلال فصل الصيف.
Critical review
دراسة نقدية: تقدم هذه الدراسة تحليلًا شاملاً ومفصلاً لمعامل الارتباط المظهري وتحليل المسار لبعض الصفات الشكلية في محصول الدخن اللؤلؤي، مما يساهم في تحسين الإنتاج العلفي الأخضر. ومع ذلك، يمكن الإشارة إلى بعض النقاط التي قد تعزز من قوة الدراسة. أولاً، كان من الممكن توسيع نطاق الدراسة لتشمل مواسم زراعية إضافية أو مواقع جغرافية مختلفة للحصول على نتائج أكثر شمولية. ثانيًا، لم يتم التطرق بشكل كافٍ إلى التأثيرات البيئية المحتملة على النتائج، وهو ما يمكن أن يكون له تأثير كبير على تطبيق النتائج في ظروف زراعية مختلفة. أخيرًا، كان من الممكن تقديم توصيات أكثر تفصيلية للمزارعين بناءً على النتائج، مما يعزز من التطبيق العملي للدراسة.
Questions related to the research
  1. ما هي الصفات الشكلية التي تم دراستها في هذه البحث؟

    الصفات الشكلية التي تم دراستها تشمل عدد الأيام حتى الإزهار، ارتفاع النبات، عدد الأوراق في النبات، عدد الإشطاءات في النبات، والغلة من العلف الأخضر.

  2. ما هي النتائج الرئيسية لتحليل معامل الارتباط المظهري؟

    أظهرت النتائج وجود علاقة ارتباط موجبة ومعنوية بين صفة الغلة من العلف الأخضر وكل من ارتفاع النبات وعدد الأوراق في النبات وعدد الإشطاءات في النبات.

  3. كيف تم تنفيذ التجربة في الدراسة؟

    تم تنفيذ التجربة في محطة خرابو وفق تصميم القطاعات الكاملة المشوائية بثلاثة مكررات، وشملت 15 هجينًا ناتجًا عن التهجين نصف التبادلي بين ست سلالات نقيّة من محصول الدخن اللؤلؤي.

  4. ما هي التوصيات التي يمكن استخلاصها من هذه الدراسة لتحسين غلة العلف الأخضر؟

    يمكن اعتماد صفات عدد الإشطاءات في النبات، وارتفاع النبات، وعدد الأوراق في النبات كمعايير انتخابية لتحسين غلة العلف الأخضر من محصول الدخن اللؤلؤي، حيث أظهرت هذه الصفات تأثيرًا مباشرًا وكبيرًا في زيادة الغلة النهائية.


References used
Abuelgasim, E.H. (1999). Pearl Millet breeding and improvement programme in Sudan. A paper presented in the monthly scientific forum October 1999, Ministry of Agric. and Fores., Khartoum
Akash, M.W.; and H.M. Saoub (2002). Grain yield of three sorghum varieties as influenced by seeding rate and cutting frequency. Pak. J. of Agron., 1 (2-3): 101-104
Akromah, R.; D. Afribeh; and M.S. Abdulai (2008). Genetic variation and trait correlations in a bird resistant pearl millet landrace population. African J. Biotech., (7):1847-1850
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