Breeding Studies On Drought Tolerance In Bread Wheat (Triticum Aestivum,L.)

1- estimating general (GCA) and specific (SCA) combining ability for parents and crosses under two different locations : zagazig and salhya representing favorable and stress conditions, respectively.2-calculating genetic components and derived parameters for the studied characters.3- detecting genetic diversity among 45 wheat genotypes under the tow studied locations.