Effect of Culture Filtrates of Fusarium oxysporum F. Sp. Ciceri and Fusarium solani on Hatching and Juvenile Mobility of Meloidogyne incognita
Authors
A. Mani
C. L. Sethi
Keywords:
Nematode-Fungal Interactions, Fungal Metabolites, Root-Knot Nematode, Inhibition of Nematode Activities
Abstract
The culture filtrates (CFs) of Fusarium oxysporum f. sp. ciceri (Padwick) Synd. and Hans. and Fusarium solani (Mart.) Sacc., were tested at different concentrations and exposure times against the root-knot nematode. Meloidogyne incognita (Kofoid & White) Chitwood, to determine their efficacy in inhibiting egg hatch and juvenile mobility The hatching pattern of eggs in CFs revealed that the CFs of both the test fungi exhibited a high degree of ovistatic effects at 10, 20, and 40% concentrations and ovicidal effects at 80 and 100% concentrations. There was a progressive increase in immobility of juveniles as the concentration of CFs and exposure period were increased. CF of F solani was far more potent than that of F. oxysporum f. sp. ciceri in inhibiting hatch and immobilizing the second-stage juveniles of M. incognita.
