Effect of chemical priming on the germination of BJRI mesta 2 (Hibiscus sabdariffa) under salinity

In the present research, the impact of chemical priming on BJRI Mesta 2 (Hibiscus sabdariffa) germination under salinity stress was examined. The seeds were primed with KNO₃ (10mM), GA₃ (50mM), or H₃BO₃ (8µM) then tested with NaCl concentrations ranging from 0 to 200mM. The findings indicated that germination significantly decreased as salinity increased, reaching total suppression at 200mM NaCl. Salinity effects were lessened by chemical priming; KNO₃ was the most successful, retaining 83.3% germination at 0mM and 5.0% at 200mM, followed by GA₃ and H₃BO₃. KNO₃ is superior at promoting germination under stress. The results provide information for growing BJRI Mesta 2 in areas impacted by salinity and demonstrate the ability of chemical priming, especially KNO₃, to enhance seed germination in saline circumstances.

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