author(s)
J Jayakumar and S Ganapathy

abstract
Root knot nematode, Meloidogyne incognita and lesion nematode, Pratylenchus zeae are major nematode species attacking sugarcane crop and causes considerable yield loss. Identification of resistant varieties or clones are important tools for resistant breeding programme. A pot culture experiments were conducted under glasshouse conditions to evaluate their resistance reaction against root knot and lesion in 27 sugarcane clones. Resistance and susceptibility reaction evaluated based on lesion index in lesion nematode and gall index in root knot nematode for each clone. The results indicated that 20 clones were found to be tolerant and six clones were found to be susceptible. The clone C 260628 was found to be moderately resistant to Pratylenchus zeae. Regarding the root knot nematode, Meloidogyne incognita resistant reaction observed that 19 clones were found to be moderately resistant and six clones were susceptible. The two clones C 260628 and CoC 24 were found to be resistant against the root knot nematode. The clone C 260628 was moderately resistant and CoC 24 was tolerant against the lesion nematode.