DefinePK

Abstract

The present study was done to determine the response of okra and chillies germplasm against root knot nematode (Meloidogyne incognita) in the green house at 34 ± 4 C. Five seeds of ten okra Varieties/lines (Subzpari, Super star, OH-152, Iqra 24, Iqra 1, China red, Diksha, M.S. 04, Sanam and Iqra 2) were sown in earthen pot and four week old chillies seedling of thirteen Varieties/lines (Tatapuri, C19, C33, C68, C73, C92, C103, C302, C2010-3, C2010-4, C2010-5, C2010-6 and C2010-7) were transplanted in pots. Okra and chillies plants were inoculated with 2000 second stage juveniles J 2 by making holes in root zone with a sharp wooden stick and covered the hole with sterilized soil to avoid the vaporization. The experiment was arranged in completely randomized design with ten replications. After 8 weeks of inoculation, the plants were harvested to determine the M. incognita reproduction on okra and chillies host plants. Twenty-three lines/verities of okra and chillies exhibited some variability in their response against RKN infection. Five lines/verities (C73, C 103, Sabz pari, lqra 24 & China red) were found susceptible whereas the seven varieties i.e. Super star, OH-152, Iqra 1, Iqra 2, Diksha, M.S 04 and Sanam were found highly susceptible. Five lines (C33, C68, C92, C302 and C2010-4) were observed moderate susceptible and five V/L (C2010-3, C2010-5, 02010­6, C2010-7 and Tatapuri) were found moderate resistant and while C19 was immune against M. incognita .