NUTRITIONAL IMBALANCE IN WHEAT (TRITICUM-AESTIVUM L.) GENOTYPES GROWNAT SOIL-WATER STRESS

An experiment was conducted to determine the effect of water stress on nutritional changes in tolerant (DS-4 and Chakwal-86) and susceptible (DS-17 and Pavon) genotypes in lysimeters. The stress was imposed at different growth stages (pre-anthesis, post-anthesis, terminal drought ). The biomass (dry weight) and Co, Mg and P concentration decreased w ith water stress in all the wheat genotypes. However, the tolerant gen otypes had less reduction than susceptible at all the treatments. Pota ssium increased in all wheat genotypes due to water stress and was hig her in tolerant than susceptible genotypes. Sodium content was not aff ected by water stress.