Genotypes used in present investigation consisted of five cotton varieties belong to (Gossypium barbadense, L.). Three of these varieties were long staple, BBB (big black boll) (P₁), Australian (P₂) and G97 (P₃) while the other two varieties were extra-long staple, Giza 92 (P₄) and G96 (P₆). Hybrids produced from these parents and evaluated with their parents in Sakha Agricultural Research Station, Egypt. Studied traits were; first fruiting node, days to first flower appearance, duration of the boll maturation, upper half mean (U.H.M), fiber strength and micronaire value. Highly significant differences among parents were detected for all traits,  excluding days to opening first boll and upper half mean .  Difference between single crosses was highly significant for all traits, except for days to first flower and upper half mean . Significant differences between double crosses were detected for all traits, excluding upper half mean . Alpha lattice analysis exhibited more efficiency than randomized complete block design at analyzing all of studied traits except for first fruiting node. Lowest values of   (CV%) and  SE were recorded for all traits excluding micronaire reading in Reml analysis which indicates high experimental precision