Host plant resistance in sesame genotypes to Antigastra catalaunalis Dup

Abstract

Investigations on “Host Plant Resistance in Sesame genotypes to Antigastra catalaunalis Dup.” were conducted at Agronomy farm and Department of Entomology, S.K.N. College of Agriculture, Jobner during Kharif, 2015 and 2016. A. catalaunalis were recorded as major insect pests of sesame during both the years of study. The infestation of A. catalaunalis commenced in the third week of August and reached its peak in the last week of August during 2015 and 2016, respectively. Out of 15 varieties of sesame screened against A. catalaunalis none was found immune. The varieties, RT-358 (4.63), RT-370 (4.38) and RT-371 (4.18) were ranked as least susceptible, while LT-8(7.93), TC-25 (6.78) and RT-46 (7.88) as highly susceptible. The morphological characters of these varieties viz., no. of leaves, no. of branches, no. of capsules and trichome density had negative correlation with the population of A. catalaunalis.