Department of Agricultural Entomology, UAS, GKVK, Bangalore - 560 065, India.
*Corresponding author's: E-mail: vijigall@gmail.com
1Agricultural Research Station, Kankanady, Mangalore - 575 002.
Among fifteen resistant donors, Phalguna (Gm2 gene), MO-4, Champaka, Shakti, Mahaveera, ARC 5984 (Gm5) and Bhumansan (Gm7+Gm8) recorded susceptible reaction during 2004–2006. Similarly, the reaction of 14 standard differentials, in four groups, recorded a progressive change in their reaction pattern against virulent rice gall midge populations. The growth rates of virulent populations were calculated as 0.31, 0.47 and 0.70 during 2004, 2005 and 2006, respectively.
