In Vitro Inhibition of the Mycelial Growth of Some Root Rot Fungi by Rhizobium leguminosarum Biovar phaseoli Isolates

Authors : İbrahim ÖZKOÇ, Muhammet Hanifi DELİVELİ

Pages : 435-445

View : 32 | Download : 11

Publication Date : 2001-12-01

Article Type : Research Paper

Abstract :In solid medium, the effects of twenty-three Rhizobium leguminosarum biovar phaseoli isolates on the mycelium development of the phytopathogenic fungi of three different genera insert ignore into journalissuearticles values(Fusarium oxysporum, Pythium ultimum and Rhizoctonia solani); were tested in vitro. The experiments were achieved by applying the superimpose dual culture technique. Most of the rhizobia tested inhibited the fungal development. The inhibition rates displayed differences in accordance with the bacteria and fungi isolates utilized. However, the inhibitory effect of the rhizobia occurred most on the isolates of Fusarium and Pythium species insert ignore into journalissuearticles values(up to 30.35% and 29.75% respectively); and least on those of Rhizoctonia species insert ignore into journalissuearticles values(16.03%);. The most effective Rhizobium isolate on the three fungal species was Rhizobium leguminosarum Çar 9.3.2 isolate and percent inhibitions were 14.65-16.03 for R. solani isolates and 14.62-30.35 for P. ultimum isolates and also 14.58-29.75 for F. oxsporum isolates.
Keywords : inhibition, R solani, P ultimum, Fusarium oxsporum, Rhizobium leguminosarum, root rot fungi