The production rate of maize plants per unit area is still low in Iraq, low crop yield per unit area, the lack of genotypes that have a genetic potential that qualifies them for high production and adaptation to the Iraqi environment, in addition to poor crop service operations, whic1h made researchers in the field of this crop to search for all scientific means, including breeding and improving individual hybrids, distinguished by its superiority in grain yield, by eliciting the internal breeding strains of the hybrids, by interbreeding them with one of the mating methods, then evaluate them genetically to find out the best and use them in agriculture, to increase the rate of production per unit area. This crop did not receive much attention from workers in the field of raising yellow corn in Iraq, whether in research centers or Iraqi universities, compared to yellow corn, which is widely grown in Iraq, possibly due to the limited local genetic resources available (although a limited number of local varieties were developed), or the difficulty of introducing modern genotypes from developed countries in the production of this crop. In selection programs depends primarily on the presence of genotypic, knowledge and understanding of genetic behavior and the correlations between these traits, determining the most influential traits as a criterion for selection, by knowing the correlation between these traits and the quotient, plant breeders resort to selection for traits among the yield components, because the grain yield is a complex characteristic, affected by a large number of legacies and environmental factors, do not respond to election easily. The selection for it may not be effective because of the link between its components, therefore, the lack of pure varieties approved and adapted to the Iraqi environment, lack of research centers producing varieties with high productivity, the productivity of barley has decreased compared to global production, because of the continuous cultivation of the same old varieties, failure to maintain its genetic purity with increasing sensitivity, therefore, plant breeders must resort to the shortest methods, to provide new genetic structures from regions and origins similar to the conditions of the Iraqi environment.