ORIGINAL ARTICLE

Influence of PGR on the Concentration of Potassium, Magnesium, and Calcium in Simarouba glauca DC. Under Water Stress

The present study aimed to examine the impact of different Plant growth regulators (PGRs)such as 50 ppm Salicylic Acid (SA), 10 ppm Putrescine, Gamma-Aminobutyric Acid (GABA), and Abscisic Acid (ABA) on the levels of potassium, magnesium, and calcium in the medicinally important, oil-yielding plant Simarouba glauca DC. under water stress conditions. One year old Simarouba glauca seedlings were subjected to water stress for 4, 8, 12, and 16 days. It was observed that water stress led to a decrease in the potassium, magnesium, and calcium content in the roots, stems, and leaves of S. glauca compared to the unstressed control. However, foliar application of ABA, SA, Putrescine, and GABA resulted in an increase in the potassium, magnesium, and calcium content in the stressed plants. Specifically, SA, Putrescine, and GABA treatments induced the accumulation of potassium. These results suggest that SA, Putrescine, GABA, and ABA play vital roles in enhancing drought tolerance in Simarouba glauca by modulating the accumulation of key minerals under water stress conditions.