NAVEEN GAUTAM, KAN SINGH, RAJENDRA NAGAR AND T. HUSSAIN

Twenty sorghum genotypes from ICRISAT, Hyderabad were screened for their preference/ tolerance to shoot fly (Atherigona soccata Rondani) during kharil 2013 at RCA, MPUA&T, Udaipur. Genotypes were screened on the basis of number of plants with eggs and percent dead hearts at 14th, 21st and 28th days after emergence with one resistant check (IS 18551) and one susceptible check (SWARNA). Of the twenty sorghum genotypes evaluated against shoot fly, the genotypes IS 2146, ICSV 700, IS 2123, ICSV 705 and IS 40615 were significantly less preferred for oviposition as observed on the 14th and 21st day after germination with a mean oviposition of 23.85, 26.07, 28.78, 30.29 and 30.99 per cent, respectively. The resistant check (IS 18551) had the lowest oviposition (18.43%) and also exhibited minimum average percentage of dead hearts (12.29%) on 28th day after emergence. Similarly, susceptibility to shoot bugs was assessed, by scoring number of both nymphs and adult shoot bug (Peregrinus maidis Ashmead) per plant at 45 days after emergence of the crop when the population was at its peak. The genotypes ICSV 705, IS 40615 and ICSV 700 harboured less than 2 shoot bugs per plant, indicating their less preference for shoot bug.