نُفّذت الدراسة في مزرعة كلية الزراعة، منطقة خرابو، جامعة دمشق، بـالعروة التكثيفيـة لعـامي
2011 و 2012 بهدف تقدير بعض المؤشرات الوراثية لصفة الغلة و مكوناتها لـ 79 عائلة مـن مجمـوع
الذرة الصفراء Sh المحسنة باستخدام طريقة الانتخاب الأخوي الكامل، وفقاً لتصميم القطاعـات الكاملـة
العشوائية و بمكررين. أشارت النتائج إلى أن قيم معامل التوريث الواسع راوحت بـين العاليـة و المعتدلـة
لكل من مكونات الإنتاجية المدروسة: عدد الحبوب بالصف، و عدد الصفوف، و طـول العرنـوس، و قطـر
العرنوس، و الغلة، و وزن العرنوس كـاملاً، و وزن الحبـوب فقـط و بلغـت (6.49 ،9.52 ،3.46 ،7.79،
74.56،51 ،2.85 %) على الترتيب. كما لوحظ سيطرة فعل المورثات الإضـافية علـى صـفات (عـدد
الحبوب بالصف، وعدد الصفوف، و طول العرنوس، و قطر العرنوس، و الإنتاجية، و وزن العرنوس كـاملاً،
و وزن الحبوب فقط)، مما يشير إلى فعالية استخدام عملية الانتخاب بكفاءة عالية، و إمكانية الاعتماد علـى
عدد بسيط من دورات التربية و التحسين لزيادة الغلة الحبية بالاعتماد على مكوناتها.
This study was conducted at the farm of Faculty of Agricultural –Kharabo
as an intensive crop during 201 and 2012 growing seasons. Using the
Randomized Complete Block Design (RCBD) with two replications to study
some genetic indices for grain yield and its components, of 79 families of the
Sh group of maize improved by Full-sib selection. The results indicated that
the broad sense heritability ranged from high to moderate for some yield
components (number of kernels per row, number of rows per ear, ear length,
ear diameter, the weight of whole ear, whole kernel weight and grain yield and
it was 49.6, 52.9, 46.3 79.7, 56.74, 51 and 85.2%) respectively. Additive gene
action appeared to be controlling number of kernel per row, number of rows
per ear, ear length, ear diameter،,grain yiel, the weight of whole ea, kernel
weight indicating less selection cycles are required to improve yield depending
on its components.
References used
AL- Ahmad, A. S. 2001. Studies on some hybrids and strains of yellow maize. M. Sc. Thesis, Fac. of Agric., Ain Shams Univ., Egypt
Abdel Moneam, M. A., A. N. Attia., M. I. EL-Emery and E. A. Fayed. 2009. Combining ability and heterosis for some agronomic traits in crosses of maize. Pakistan. J. of Bio. Sci. 12 (5) : 433–438
Abd El Sattar, A. A. 2003 .Genetic parameters estimation from design-1 and S1 lines in maize. Minufiya J. Agric. Res., 28 (5) : 1387 – 1402
This study was carried out during 2010-2011 growing seasons at the
Maize Researches Department (G.C.S.A.R.) Damascus. To estimate
heterosis for number of rows per ear, ear length, ear diameter, 100- kernel
weight, and grain yield.
The present investigation was undertaken to estimate phenotypic
correlation and path coefficient analysis for grain yield and its components in
maize. Four local genotypes of yellow maize were evaluated in 2008 and 2009
growing seasons at two loca
This study was carried out at the Scientific Agriculture Research Center, Al-Ghab,
Syria, during 2013 –2014 growing seasons to estimate heterosis, combining ability,
phenotypic correlation and path analysis for plant and ear height, ear length, ear
The research was conducted at the Maize Researches Department, General
Commission for Scientific Agriculture Researches (G.C.S.A.R.) Damascus,
Syria during the summer growing seasons of 2010, 2011 and 2012. Treatments
were arranged in a Randomized
A half diallel set of crosses among six inbred lines of maize were evaluated at the
Maize Research Department (G.C.S.A.R.) in Damascus Governorate during 2010 and 2011
growing seasons to estimate heterosis and combining ability components for the n