Effect of Seedlings Development, Some Physiological and Biochemical Properties of Cabbage Seedlings Grown at Different Irrigation Levels of the Plant Growth Promoting Rhizobacteria Application

The purpose of the present study were to investigate the beneficial effect of plant growth promoting rhizobacteria (PGPR) (Bacillus subtilis TV- 13B, Bacillus pumilus TV- 67C and Bacillus megaterium TV6D+ Pantoea agglomerans RK- 92+ Brevibacillus choshiensis TV- 53D) in extenuating the detrimental effects of drought stress in cabbage seedlings physiological and biochemical grown, creating diverse irrigation deficiencies. The present study, a pot experiment was conducted to measure the beneficial effect of PGPR on drought stress tolerance mechanisms of cabbage seedlings grown under four different irrigation levels (I1, I2, I3 and I4) which was determined considering different levels (100, 75, 50 and 25 %) of evaporated water from the diminished class- A pan. Furthermore, some experimental data exposited an increase in preferable growth and development in inoculated and stressed plants when compared with uninoculated and stressed plants. At the end of the research, Bacillus pumilus TV- 67C strains were determined to increase drought stress tolerance in cabbage seedlings by accelerating the accumulation of inherent levels of superoxide dismutase, catalase and peroxidase also amino acid and hormone production, but decreased membrane permeability and lipid peroxidation inoculated plants under irrigation deficient.