The late planting stress susceptibility index (S) revealed that out of Pima genotypes, Earlipima was more stable followed by G.83 of the Egyptian cotton genotypes. It is worthy to mention that G.83 is characterized with its high yield potential (averaged over environments,) coupled with its high stress tolerance to LP system. Yield-stability statistic (YSi) identified that out of the Egyptian group one parent (G.83) in seed cotton yield and two (G.83 and G.85) in lint yield as superior and stable. However, for Pima cotton all four genotypes in seed cotton yield and three ones (PS-4, PS-6 and PS-7) in lint cotton were stable. Therefore, the two Egyptian cul­livers G.83 and G.85 and the three Pima ones PS-4, PS-6 and PS-7 may be considered as stable genotypes for the late planting stress tolerance and may be incorporated in any further breeding pro­gramme for breeding short season cotton using the G. barbadense germplasm. Earliness in maturity, stability criteria studies in­dicated that PS-6 and PS-7 were stable ones judged by earliness index, PS-4 was stable on the basis of mean maturity date and the four Pima genotypes were stable in production rate index. This data support the possible merits or incorporating Ps4, Ps6 and Ps7 in the breeding programmes for late planting stress toler­ance.