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This study was conducted during 2009 and 2010 seasons to evaluate the performance of commercial varieties and new promising lines of cotton in new area under new system of irrigation (drip irrigation). A graphic summary of the data using GGE Biplot was used to characterize the performances of genotypes. Long stable genotypes were surpassed in yield properties meanwhile extra long stable were better in fiber quality except for G84 x Ps6 which was strong competitiveness for long stable genotypes in lint percentage. The results showed that the new promising line 10229xG86 was the better under these conditions for seed cotton yield and lint cotton yield, G86 was better for lint percentage and G77xPs6 was better for fiber length meanwhile each of G88 and G84xPs6 were better for yearn strength . Genotypes were always the most important source of variation which ranged from 65.03 for seed cotton yield to 92.5 for yearn strength.

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