Author(s):

Karan Singh Guleria, Gautam Chakraborty, Shanowly Mondal Ghosh and Anamika Kar

Abstract: The experimental result revealed that none of the genotype was found highly resistant against the root knot nematode, however three genotypes namely EC - 620394, EC – 620427 and EC – 617047 were recorded resistant having 1.1 to 2.0 root gall index. Ten genotypes exhibited moderately resistant reaction having root gall index between 2.1 to 3.0. Among the remaining genotypes, twenty were found susceptible showing root gall index between 3.1 to 4.0 and eighteen lines were found to be highly susceptible having root gall index between 4.1 to 5.0. Susceptible cultivars developed heavier root systems because of root galling compared to resistant cultivars. Similarly, resistant plants have shown more growth in 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 (r = -0.867, -0.917, -0.917, -0.925 respectively) while egg mass, fresh root weight and dry root weight, were positively correlated with root knot index (r = 0.723, 0.855, 0.761 respectively).

Pages: 780-783  |  767 Views  319 Downloads

Download (659KB)