INFLUENCE OF EXOGENOUSLY APPLIED PLANT GROWTH REGULATORS ON PHOTOSYNTHETIC PIGMENTS OF AMARANTHUS GANGETICUS L. UNDER SALT STRESS.

The exogenous applications of plant growth regulators like Putrescine, yAminobutyric Acid (GABA), salicylic acid (SA) and Biotonic formulation under the NaCl salinity stress (50, 100 mM) on the Photosynthetic Pigment content of A. gangaticus were studied. It reveals that foliar sprays of these growth regulators increases the photosynthetic pigments as compared to the untreated plant. The applications of SA and Putrescine exhibits significant increase in the chlorophyll and carotenoid content at lower levels of salinity (50mM) doses. This will help to improve the photosynthetic efficiency under saline conditions.