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العنوان
Using Biparental Mating System for Encouraging Desirable Recombination in Cotton /
المؤلف
Farag, Yaser Mohamed Atya.
هيئة الاعداد
باحث / ياسر محمد عطية فرج
مشرف / صبحى غريب رزق سرور
مشرف / محمد عزت عبد السلام
مشرف / أحمد عبد الرحمن جلال
الموضوع
Agriculture.
تاريخ النشر
2017.
عدد الصفحات
89 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
العلوم الزراعية والبيولوجية
تاريخ الإجازة
26/7/2017
مكان الإجازة
جامعة كفر الشيخ - كلية الزراعة - المحاصيل
الفهرس
Only 14 pages are availabe for public view

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from 89

Abstract

The pervious results exhibited that the mean performance was higher in biparental progenies than F3 families. Increasing of mean performance in biparental for most traits in both crosses is due to the possible accumulation favorable genes as a result of breakdown of undesirable linkages by intermating.
The coefficient of both the variation genotypic and phenotypic for most traits revealed that high differences were observed for biparental compared with F3 families except for lint index, lint percentage, seed index and fiber strength in cross I as well as, earliness index and lint yield in cross II
In general, high heritability was observed in biparental of cross I and cross II except for earliness index, seed cotton yield, lint yield and fiber properties compared to F3 selfed. On the other hand, high heritability coupled with low and moderate GCV and PCV for some traits indicated the presence of both additive and non-additive gene action .Genotypic correlation between different traits changed especially between seed cotton yield and both earliness index and fiber properties in cross I by using intermating.
In this study, superior hybrids yield and more earliness and characteristics by high fiber quality compared with the F3 families. Therefore, continue of evaluation and selection for those hybrids help to increase efficiency in cotton breeding programs where It depend on performance of families and individual plants within their hybrids which may bring better prospects of deriving superior genotypes with desired traits from intermated. Thus, these genotypes could be used in cotton breeding programs.