Breeding Melon (Cucumis melo L.) for resistance to powdery mildew and fruit quality characteristics.

This study was conducted during the period from 2015 to 2017 resistance of powdery mildew in eight melon inbred lines and their hybrids order reduce losses quality yield.  Eight different genetically were selfed for six generations ensure homozygosity. They have been self-pollinated intercrossed a half diallel mating design obtain 28 2015. Thirty genotypes (8 Lines produced hybrids) evaluated reaction 2016. The results showed that P5, P6, P7 P8  lines, all contain P6 [(P1) X(P6), (P2) (P3) (P4) (P5) (P6) X(P7) X(P8)]  beside P5X P7, P8 P7X low infection (between 1-12.5%) is meaning they are resistant. genetic most appeared significant negative heterosis over its mid parent. On contrary, studied positive better potence ratio estimates indicated dominance towards resistance. In at WADY El-Natroon, 36 along with parents determine heterosis  economic traits, viz., days picking, early yield/plant, total average fruit weight, shape index, netting, soluble solids flesh thickness. highly mean squares traits. Some crosses revealed mid-parent better-parent many resistant had good horticultural characteristics. best promising lines.