The effect of endophytic halotolerant bacteria inoculation in the development of soybean seedling under salinity stress

This title will be presented on Friday, December 15, 2023 at 09.05-09.15 GMT+7.

Abstract

This title will be presented on Friday, December 15, 2023 at 09.05-09.15 GMT+7.

Salinity stress is one of limiting factor in agriculture productivity which has detrimental effects on seed germination, vigour and crop yields. Using symbiotic microorganisms is one of the bio-techniques that have proved to be efficient in enhancing salinity resilience in agriculture, especially for seedling development. This study aims to determine the effect of inoculation endophytic halotolerant bacteria in the development of soybean seedlings under saline stress. The experiment used soybean variety e.i. Devon 1 with inoculation of four different endophytic halotolerant bacteria namely B0 (Hoagland solution as control), B3 (phosphate solubilizing bacteria), B4 (ACC-deaminase producing bacteria), and B5 (phosphate solubilizing bacteria, ACC-deaminase producing bacteria, and nitrogen-fixing bacteria). The salinity stress treatment made by adding NaCl with concentration of 0, 40, 80, 120, and 160 mM to Hoagland solution as germination medium. The inoculation bacteria increased the shoot length, fresh weight, chlorophyll content, root length, and root number up to 30% of Devon 1 at salinity stress treatment 120 mM. The highest increase in seedlings growth parameters was observed on seedlings inoculated by B3 and B5 under salinity treatment of 120 mM.