Abstract
Pathogenic forms of Rhizoctonia solani are known to attack many species of higher plants from different families. It is one of the causal agent of the damping-off and root rot of cotton. Thecurrentdamping-offmanagementpracticesare not satisfactoryforpreventingyieldlosses in cottonproduction. Hypovirulence, causedbyparticularmycoviruse species, is used in the management of certain plant diseases. The existence of mycoviral dsRNAs in the isolates of R. solani has been previously determined in various countries. ThisstudyaimedtoinvestigatedsRNAcontent in thecottonisolates of R. solanicollectedfromAydin Province. In total, 64 R. solani isolates collected from cotton seedlings exhibiting light damping-off symptoms were subjected to dsRNA analysis. The dsRNA electrophoretic pattern with the size of 12-18 kb were detected in six R. solani isolates. The virulence of these six isolates were compared with a dsRNA-free isolate in apple assay. Two R. solani isolates having dsRNA content caused smaller lesions in the inoculation point on apple fruit, which may be the indication of hypovirulence.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
