Shadi hani akil ^(1)*

(1). Second Faculty of Agriculture, Damascus University, Seiwda, Syria.

(*Corresponding author: Dr. Shadi Akil. E-Mail: shadi78136@hotmail.com).

Accepted:10/04/2023                         Received:28/05/2022   

Abstract:  

This research aimed to estimate the effect of three species of (PGPR)Frateuria aurantia (Fra), Pseudomonas fluorescens (Ps), and Rhizobium leguminosarum (Rh) in growth inhibition of two isolates of Fusarium oxysporum(F5and F6) . Frateuria aurantia showed the highest fungal growth inhibition with 60,33% and 48.23%, secondly Pseudomonas fluorescens isolatewith inhibition effect (41.25% and 28.86%), finally Rhizobium leguminosarum which reached (31.76% and 22.35%). results showed also that volatile products of studied bacterial spices had an inhibitory growth effect of both F.oxysporum isolates. Fra specie achieved the highest inhibition growth on F5 with ratio (17.77%), with no significant differences comparing by F5+Ps (17.18%), whereas F. aurantia significantly excelled at all experiment pilot, as inhibition growth of F6 isolate which reached to  (28.02%) .

Keywords: Plant growth promoting rhizobacteria (PGPR)،growth inhibiting,Fusarium oxysporum.

Full paper in Arabic:  pdf