Susceptibility of maize varieties to Rhyzoperthadominica(Fabricius) under storage condition

Abstract

Three laboratory trials for three different aspects, population growth, weight loss and germination loss were carried out at Department of Agricultural Entomology, B. A. College of Agriculture, Anand Agricultural University, Anand during 2010-11 using ten different maize varieties/ genotypes for their susceptibility to lesser grain bore R. dominica under storage condition. The variety CML 269 had lowest number of adult emergence (3.30) and it was at par with Amber (3.62) and GM 2 (4.98). The per cent weight loss in stored maize after 6 months due to infestation of R. dominica indicated that the weight loss was lowest in case of CML 269 (1.40%) and it was at par with Amber (1.56%), GM 2 (1.63%) and Narmada Moti (1.72%). The germination loss after 6 months due to infestation of R. dominica was lowest in CML 269 (13.03%) and it was at par with Amber (13.62%) and GM 2 (13.74%). The varieties/ genotypes CML 269, Amber, GM 2, Narmada Moti and GM 6 comes under tolerant category based on all the three parameters can be considered as tolerant. Madhuri and HM 5 were also tolerant based on population growth and weight loss. Variety GM 4 falls under less susceptible category and GM 3 under more susceptible category. Variety HQPM 1 was highly susceptible to R. dominica based on population growth and weight loss.