Screening Pakistani cotton for drought tolerance

The drought is one of the biggest abiotic stresses for crop production in arid and semi-arid agriculture. thus it is a challenge for plant scientists to screen and develop the drought tolerant cotton lines. in this study,31 cotton genotypes/cultivars were evaluated under two irrigation regimes i.e.,seven irrigations (control) and two irrigations (stress),using split plot design with four replications. the crop growth,yield and some physiological parameters were studied. there were high inter-varietal differences for all the parameters under control as well as drought stress. although all the varieties for all parameters were significantly affected by drought but however,cris-9,marvi,cris-134,cris-126,cris-337,cris-355 and cris-377 maintained highest performance for all the parameters studied under high drought conditions.