The Effect of Growth-Promoting Rhizobacteria on Morphological Growth Indices of Cerasus mahaleb (L.) Mill's Provenances - (Case study: Fereydunshahr)

In order to investigate the effect of inoculation of Cerasus mahaleb provenances in Fereydunshahr city of Isfahan with the most important rhizosphere bacteria stimulating plant growth on morphological indices of Cerasus mahaleb, a factorial experiment was planned in a completely randomized block design with three replications in a greenhouse. Inoculation of seedling with five levels including non-bacterial inoculation (as a control), inoculation with bacteria (Bacillus sp.), (Azotobacter sp.), (Pseudomonas fluorescens) and combination treatment of three growth-promoting bacteria (MIX) and calculation of characteristics morphological analysis of Cerasus mahaleb was performed. In the study of morphological traits of seedlings, combined treatment (MIX) of bacteria showed the best performance in stem length (27.66 cm), root length (70.61 cm), basal diameter (9.07 mm), shoot (21.62 g) and root (28.45 g) dry weight, and number of leaves (22). Only in leaf area (23.82 cm), bacterial treatment (Pseudomonas fluorescens) had better performance than MIX. The results showed that the weakest performance among bacterial growth stimulant treatments was related to bacteria (Bacillus sp.). Among the 10 study areas, Chal Khalil 1 and 2 forest reserve areas as well as Poshtkuh Durak 2 showed the best morphological traits compared with other areas in bacterial inoculation. In fact, inoculation of seedlings with growth-promoting bacteria can be a good way to produce healthy and strong seedlings as well as better establishment and increase the success of seedlings in disturbed and degraded habitats of this important species of Zagros forests.