Evaluation of Physiological and Biochemical Parameters of Some Wheat (Triticum aestivum) Genotypes under Salinity Stress

Abstract

Physiological and biochemical parameters of plants among five wheat genotypes: KH-65, KRL-210, KRL-99, PBW-343 and PBW-373 were studied. Wheat plantlets, at three-leaf stage, were supplemented with 0, 50, 100, 150, 200, 250 and 300 mM of NaCl for 48 hours. Principal component analysis revealed chlorophyll and carotenoid degradation as best salinity indicator for studied wheat genotypes. Salt tolerance levels of studied wheat genotypes were in the order: KH-65 > KRL-210 > KRL-99 > PBW-343 > PBW-373. The study has revealed that observed physiological and biochemical data may provide an insight into the existence of internal mechanism in salt tolerant genotypes to cope up with salinity stress.