Effect of Pseudomonas fluorescens strains on morphophysiologic traits and nutrients uptake in some of rice cultivars

To evaluate the effect of growth promoting bacteria on morphophysiologic traits and nutrient uptakes of two rice cultivars, an experiment was carried out in 2009-2010 cropping season in Rice Researches Institute of Rasht. The experiment design consisted of four randomized complete blocks in a factorial arrangement having 16 treatments in 4 replications. In this research, two factors were evaluated: rice cultivars (Khazar and Hashemi) and eight levels of seed inoculation with PGPB and without seed inoculation. In this experiment, effect of both cultivar and effect of bacteria were significant on the most of studied characteristics. In this experiment, Khazar had positive effect on the most of studied characteristics in comparison with Hashemi. Application of these microorganisms increased the content of N, P, K, Ca and Fe in plant, but didn’t influence Mg adsorption. Between bacterial different strains, seed inoculation with 168, 177 and 93 strains increased evaluated characteristics significantly, compared with other strains.