author(s)
Nihal R, Karan Singh Guleria, Snehalatha N and Thakoor Pavan

abstract
The experiment was conducted during the year 2016 and 2017 at Department of Agricutural Entomology, BCKV, West Bengal to evaluate the germplasm resistance against root knot nematode. Fifty one cultivars of tomato were evaluated and the results obtained from the study on first experiment revealed that out of 51 genotypes, no genotype was highly resistant, genotypes (EC- 620394, EC- 620427, EC- 617047) were resistant having 1.1 to 2.0 root gall index, 10 genotypes exhibited moderately resistant reaction having root gall index between 2.1 to 3.0 and 20 were found susceptible and 18 lines were found to be highly susceptible. The correlation of root knot index with both root and shoot attributes conforms that the growth of root length, shoot length, fresh shoot weight and dry shoot weight is negatively correlated to the root knot index. While in case of egg mass, fresh root weight and dry root weight, increase was seen with increase in the root knot index.