*V.C.S.G. College of Horticulture, G.B.P.U.A&T., Bharsar, -246 123, Pauri Garhwal
**Department of Entomology, College of Agriculture, G.B.P.U.A.& T., Pantnagar-263 145, India
S.G.R.R. Post Graduate College, Pathri Bagh, Dehradun-248 001
Online published on 23 July, 2012.
Antibiosis mechanism of resistance against BPH was studied in thirty rice entries with different level of resistance. Per cent nymphal survival, growth index values, population buildup, average nymphal emergence/female and adult longevity were significantly lower while nymphal duration was found longer as compared to susceptible check (TN-1) on different resistant entries studied.
Antibiosis, Nilaparvata lugens, Resistance