الفهرس 
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Abstract
The present investigation used seven divergent cotton genotypes as parents. These genotypes were (Giza 85 (P1), Ashmouni (P2), Giza 75(P3), Giza 80 (P4), Giza 86 (P5), Giza 90 (P6) and Giza 95 (P7).).All the genotypes used in this study belong to (G. barbadense, L.). These genotypes (seven parents, their 21 F1 hybrids) were crossed in a half-diallel genetic design according to Griffing’s method II, model I (1956).
The main objectives of the present investigation were to determine heterosis, general and specific combining ability, broad sense heritability and Phenotypic correlation coefficient for earliness, yield and yield component traits and fiber quality and properties.