Screening of different sorghum genotypes against rice weevil, Sitophilus oryzae (L.) for their resistance

Abstract

The present laboratory study was conducted to screen the different twenty three sorghum genotypes to rice weevil, Sitophilus oryzae (L.) for their resistance / susceptibility by no choice method during 2016-17. The least number of adult emergence, seed infestation and seed weight loss was observed in genotypes viz, IS 2312 (1.00 adult, 0.33 % and 0.15%), IS 2205 (2.00 adults, 0.67% and 0.28%), M 35-1 (2.00 adults, 0.33 % and 0.30%) and IS 18551 (3.00 adults, 1.00 % and 0.60 %), respectively at 30 days after storage. Similar trend was recorded at 60, 90 and 120 days after storage.