Unlocking Growth Potential:  Enhancing Salt-Stressed Seed Germination and Seedling Growth with GA₃ Priming in Acacia auriculiformis A.Cunn. ex Benth., Delonix regia (Bojer ex Hook.) Raf. and Cassia fistula L.

Preethi Jenifer Praticia S ¹ Selva Kesavan, R. K² and Kanchana.M^1*

¹Department of Botany, PSGR Krishnammal College for Women, Coimbatore, India.

²Department of Biotechnology, PSGR Krishnammal College for women, Coimbatore. India

Corresponding Author E-mail: kanchana09psgrkcw@gmail.com

DOI : http://dx.doi.org/10.12944/CARJ.11.3.28

Abstract:

Gibberellic acid (GA₃) is the one of the plant growth regulator which helps plants tolerate salt competently and diminishes the effects of salt stress. The present investigation was done to determine the effect of GA₃ on   two different Nacl concentrations on seed germination and physiological limits of four fabaceae seeds: Acacia auriculiformis A.Cunn. ex Benth., Delonix regia (Bojer ex Hook.) Raf., Cassia fistula L., and Samanea saman (Jacq.) Merr. Experimentation was directed as a factorial with a completely randomised block design with three replicates. Salinity at two levels (50 mM and 100 mM NaCl) and hormone (GA₃ at 150ppm versus no GA₃ were the experimental conditions. Therefore, when the salt level was 50 mM NaCl, priming the seeds of these tree seeds with 150 ppm GA₃ suggestively increased germination percentage, declined mean germination time, improved   physiological parameters of the seeds.

Keywords:

Salt Priming; Tolerance; Germination Percentage; Gibberellic Acid; Root Length; Shoot

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