Influence of Antagonist Rhizobacteria on Attachment of Pasteuria penetrans and their Nematicidal Potential against Root Knot Nematode (M. incognita)

Abstract

Root-knot nematodes have wide host range, causing damage to many annual and perennial crops. Therefore the present study was planned to check the effect of PGPRs on juvenile’s mortality and egg hatching inhibition of M. incognita   and attachment of Pasteuria penetrans with second stage Juveniles under lab conditions. All PGPR increased the spores attachment with second stage juveniles, maximum spores attachment (194.23 %) was found in E. cloacae and minimum spores attachment (142.3 %) was found in E. areogenis after 24 hours. All the PGPRs caused larval mortality and inhibition in egg hatching with varying degrees. Maximum eggs inhibition (75.48 %) was found in P. flourescencs and minimum eggs inhibition (69.47 %) was found in E. areogenis after six days and maximum juvenile's mortality (88%) was found in P. flourescencs and minimum juvenile's mortality (78%) was found in E. areogenis after two days.