الفهرس 
المقدمةOnly 14 pages are availabe for public view
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Abstract
Maize (Zea mays L.) is one of the major cereal crops in
Egypt and the worldwide. Com has been referred to as ” The cereal of
the future ” due to its high nutritional value and the wide utilization of
its products and by-products (Milazzo, 1986).
The world production of corn ranked third in the order of the
world cereal production (F.A.O. 1988). Also, its rank in Egypt is the
third leading crop surpassed only by rice and wheat and total area
devoted to maize cultivation annually in Egypt is about two million
feddans. Egypt produces from five and a half to six millions tons
annually with an average yield/feddan reached 22.90 Ard./Fed.* (Ardab
= 140 Kg) which covers about 75% of our essential need for human and
livestock feeding.
Therefore, to over come such a gap, evaluation and selection of
elite prom1smg inbred lines either local and/or exotic cultivars as well
as have now become of main research objectives to achieve this
purpose and for utilizing a hybrid vigor.
On the other hand, yield anti yield co111ponents; physiological
and chemical traits are of the great importance for dealing with the
inheritance of such entities to assist maize breeders and geneticists to
plan the convenient breeding programmes for increasing yield