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Study of the Most Important Morphological and Productivity Characters of the Inbreed Lines of Squash Cucurbita Pepo L.

دراسة أهم الصفات المورفولوجية و الإنتاجية لبعض السلالات المرباة ذاتياً من قرع الكوسا Cucurbita pepo L.

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




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In this research, nine inbreed lines of squash (Cucurbita pepo, L) have been studied during 2007-2008 seasons. The study contains plant phonological phases, and the most important morphological and productivity characteristics related to fruit yield to evaluate the characteristics of every line and identify the economical lines to use it in the breeding programs. The study showed genetic variation between the groups for some important economic characteristics as (the number of fruits per plant, percentage of female flowers, yield per plant, stem long and number of nodes till the first female flower). The study also showed that the inbreed lines of squash is a rich source of variation and can be use in a breeding program to product squash hybrid. The results appeared also the positive correlation between the productivity and some important economic characteristics, such as percentage of female flowers (r=0.871**), the number of fruits per plant (r=0.976**). Whereas negative correlation with the nodes till he first female flower (r=- 0.494) and internodes long (r=- 0.447). Using cluster analysis, the inbreed lines were classified into 2 distinct classes A and B, Class A contained seven inbreed wreathe class B contained Tow inbreed lines.


Artificial intelligence review:
Research summary
في هذا البحث، تم دراسة تسعة خطوط داخلية من نبات الكوسا (Cucurbita pepo L) خلال موسمي 2007-2008. تضمنت الدراسة مراحل النمو النباتي وأهم الصفات المورفولوجية والإنتاجية المتعلقة بإنتاج الثمار لتقييم خصائص كل خط وتحديد الخطوط الاقتصادية لاستخدامها في برامج التربية. أظهرت الدراسة وجود تباين وراثي بين المجموعات لبعض الخصائص الاقتصادية الهامة مثل عدد الثمار لكل نبات، نسبة الأزهار الأنثوية، الإنتاجية لكل نبات، طول الساق وعدد العقد حتى أول زهرة أنثوية. كما أظهرت الدراسة أن الخطوط الداخلية للكوسا هي مصدر غني للتنوع ويمكن استخدامها في برنامج تربية لإنتاج هجين الكوسا. أظهرت النتائج أيضًا وجود ارتباط إيجابي بين الإنتاجية وبعض الخصائص الاقتصادية الهامة مثل نسبة الأزهار الأنثوية (r=0.871 **)، وعدد الثمار لكل نبات (r=0.976 **). بينما كان هناك ارتباط سلبي مع عدد العقد حتى أول زهرة أنثوية (r=-0.494) وطول العقد الداخلية (r=-0.447). باستخدام تحليل التجميع، تم تصنيف الخطوط الداخلية إلى فئتين متميزتين A و B، حيث احتوت الفئة A على سبعة خطوط داخلية بينما احتوت الفئة B على خطين داخليين.
Critical review
دراسة نقدية: على الرغم من أن الدراسة قدمت معلومات قيمة حول الخطوط الداخلية لنبات الكوسا وأهميتها في برامج التربية، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن تقديم مزيد من التفاصيل حول الظروف البيئية والتجريبية التي أجريت فيها الدراسة لضمان تكرار النتائج في بيئات مختلفة. ثانياً، كان من المفيد تضمين تحليل اقتصادي لتحديد مدى الجدوى الاقتصادية لاستخدام هذه الخطوط في الإنتاج التجاري. وأخيراً، كان من الممكن توسيع نطاق الدراسة لتشمل مزيداً من الصفات المورفولوجية والإنتاجية لتقديم صورة أكثر شمولية عن إمكانيات هذه الخطوط.
Questions related to the research
  1. ما هي الأهمية الاقتصادية للخطوط الداخلية لنبات الكوسا التي تم دراستها؟

    الأهمية الاقتصادية تكمن في تحديد الخطوط التي تتميز بصفات إنتاجية عالية مثل عدد الثمار لكل نبات ونسبة الأزهار الأنثوية، مما يجعلها مناسبة للاستخدام في برامج التربية لإنتاج هجين الكوسا.

  2. ما هي الصفات المورفولوجية التي تم دراستها في هذه البحث؟

    تم دراسة الصفات المورفولوجية مثل طول الساق، عدد العقد حتى أول زهرة أنثوية، وطول العقد الداخلية.

  3. كيف تم تصنيف الخطوط الداخلية لنبات الكوسا في الدراسة؟

    تم تصنيف الخطوط الداخلية إلى فئتين متميزتين باستخدام تحليل التجميع: الفئة A التي احتوت على سبعة خطوط والفئة B التي احتوت على خطين.

  4. ما هو الارتباط بين الإنتاجية ونسبة الأزهار الأنثوية في الخطوط الداخلية لنبات الكوسا؟

    أظهرت الدراسة وجود ارتباط إيجابي قوي بين الإنتاجية ونسبة الأزهار الأنثوية (r=0.871 **).


References used
Abdel –Meged, A. H. (1989). Inheritance for some economical characters in crosses among Cucumber and Squash Cultivars. Ph.D. Thesis. Fac of Agric. Minufiya Univ. pp. 155
Ahmed, E. A.; Iban Oaf, H. S. and El Jak, A. E. (2003). Combining abilities and heterosis in Line x Tester crosses of summer squash (Cucurbita pepo L.). Cucurbit Genetics Cooperative Report 26:54-56
Bassett, J. M. (1986). Breeding vegetable crops, AVI Publishing company, INC, westport, Connecticut. U.S.A. 1986,214-219 p. Bascur, G. (2005). Evaluacion de la capacidad combinatoria
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