الفهرس 
Introduction
Gene action and heritabilityOnly 14 pages are availabe for public view
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Abstract
Five varieties of eggplant were evaluated to obtain 10 F1 hybrids (F1), 10 F1 reciprocal hybrids (F1r), their F2 generations (F2) and their F2 reciprocal generation (F2r) through complete diallel crosses mating design. These varieties were: Long Purple, Black Beauty, Balady Dark Long, Balady Dark Round and Balady White Long. Consequently, the genetic materials used in this study included: 10 F1 hybrids, 10 F1 reciprocal hybrids, 10 F2 generations, 10 F2 reciprocal generations and their five parental varieties.The results indicated that the mean squares of genotypes showed highly significance for all studied traits. The means of F2 generations and F2 reciprocal generations showed reduction if compared with the F1 hybrids and F1 reciprocal hybrids. Thus, most studied traits exhibited significant values of inbreeding depression. The highest value of heterosis estimated from the all F1,1r hybrids against the better parent (B.P.) was 47.83 % for T.Y./Pt. (kg) trait. The results indicated that the mean squares of SCA were larger than those of the mean squares of GCA for most studied traits. This finding revealed the importance of nonadditive genetic variances including dominance in the inheritance of these traits. The obtained results indicated that the values of heritability in broad sense (h2b) for F1 hybrids and F2 generations were larger than their corresponding values of heritability in narrow sense (h2n%) for all studied traits. The results revealed that the magnitudes of the phenotypic (rph) and the genotypic (rg) correlations were relatively close to each other. All pairs of studied traits were genotypically and phenotypically correlated. All (rg) and (rph) among all pairs studied traits were positive indicating the possibility of improving linked traits.