L. S. D. 0.5 to compare between means of different F1 populations =0.488 Also, results presented in Table (8) indicated that over dominance in yield was 1.26 in the cross Super strain B × NCEBR-6 trends to high yield. This result revealed that in screening plants to early blight disease, it appeared expressions of genes whereas, there are variations between parents. The F1 hybrids Peto-82 × NCEBR-6 and Edkawi × NCEBR-6 had slightly positive partial dominance (P = 0.23 and 0.20) from mid parent means trend to high parent Edkawi in total yield under greenhouse conditions.