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Register a new userالسلوكية الوراثية لهجن محلية من الذرة الصفراءالمنتجة باستخدام التهجين نصف التبادلي
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جامعة الفرات رسالة ماجستير
Publication date
2010
fields
Agricultural Engineering
and research's language is
العربية
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نفذ البحث خلال الموسمين المتتالين 2008و 2009 في محطة المريعية التابعة لمركز البحوث العلمية الزراعية بدير الزور
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References used
شهاب سعود 1995 رسالة ماجستير " التباين الوراثي والعلاقات بين الصفات المحصولية في الذرة الرفيعة ( الذرة البيضاء )" السودان , جامعة الجزيرة , كلية الزراعة
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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
umber of
rows per ear, number of kernels per ear, ear length (cm), ear diameter(cm), 100-kernel
weight (g), and grain yield (ton /hec).
The inbred lines, crosses, general combining ability (GCA) and specific combining
ability (SCA) mean squares were highly significant for all the studied traits, showing the
existence of a genetic variance among lines.
The ratios of GCA to SCA detected for the studied traits showed the dominance of an
additive gene action for all the studied traits except for 100-kernel weight and grain yield
which showed the predominance of a non-additive gene action.
The heterosis percentage for the studied traits was significant based on mid and
better parents.
The GCA effects showed that the lines CML.317, CML.371, CML.373 and
CML.367 were good general combiners for grain yield, while the SCA effects showed that
seven hybrids were the best F1 cross combinations such as (CML.317×CML.371) for grain
yield.
دراسة السلوكية الوراثية لصفة صلابة الثمار في هجن نصف تبادلية من البندورة ( Lycopersicom esculentum Mill )
Forty-six inbred lines of yellow maize (zea mays L) crossed apically with Al
Ghouta variety No. 82 during 2008 growing season at Dir Ala, Dead Sea.
This study was conducted at the Faculty of Agriculture, Damascus
University, during two seasons (2002-2003) to assess the effect of irrigation
methods (drip, sprinkler, furrow) of maize (Gota 82). The results showed
significant differences between
irrigation methods in grain and green weight
production (average of two seasons, for grain: 6.48 t/ha,6.065 t/ha, and 7.905
t/ha for drip, sprinkler and furrow irrigation respectively, and for green
weight 24.4t/ha, 22.04t/ha, and 25.75t/ha for drip, sprinkler and furrow
irrigation respectively).Concerning total water requirement, drip irrigation
method was the lowest one (average of two seasons, 4392.87m3/ha) followed by
sprinkler irrigation (5565m3/ha) compared with furrow irrigation
(9011.92m3/ha).
This study was carried out in cooperation between the Faculty of
Agriculture, Damascus University and the General Commission for Scientific
Agricultural Research (GCSAR) in Karahta station of field crops researches
during two growing seasons (2003
-04 & 2004-05).
Four local improved barley lines and cultivars (female parents) were
crossed with five exotic lines and cultivars (male parents) using line × tester
method. The crosses were grown along with their parents in a randomized
complete block design (RCBD) with three replications to estimate general
combining ability (GCA), specific combining ability(SCA) and both mid and
high parent heterosis for number of spikes per plant, number of grains per
spike, thousand kernel weight, and grain yield per plant.
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