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Screening, confirmation and field evaluation of promising resistant germplasm of different pulses against root knot nematode, Meloidogyne javanica

Aim: Experiment conducted in the microplots infested with the root knot nematode, Meloidogyne javanica against the germpalms of thechickpea, pigeon pea, mungbean and urdbean. Methodology: In this study, 71 genotypes of chickpea, 30 genotypes of pigeon pea, 14 genotypes of mungbean and 12 genotypes of urdbean were screened for their reaction to root-knot nematode, M. javanica in infested microplots. Initial nematode population was recorded. Various germplasms of pulses was sown in microplots. The plants were maintained as per the standard agronomic practices. All the germplasm were assessed to determine gall index. Results: Seventy one genotypes of chickpea were screened against M. javanica, among them 19 were highly resistant, 8 resistant and 12 were found to be moderately resistant. Out of 30 genotypes of pigeonpea, 19 were highly resistant, 2 were resistant and 3 were moderately resistant to the root-knot nematode. Fourteen genotypes of mungbean screened against M. javanica, none of the germplasm was found resistant, however, four genotypes showed moderately resistant reaction. Interpretation: It may be concluded that several types of reaction were observed in screened germplasm of pulse viz., highly susceptible, susceptible, moderately resistant and resistant. These types of reaction may be due to different genotypic content of the germplasms.