Study of Genetic Improvement and Susceptibility in Relation to the Infestations of the Leaf Roller and Capsule Borer Antigastra catalaunalis (Duponchel)

One hundred twenty nine accession of sesame with susceptible (TC-25) and resistance check (SI-250) were screened under natural infestation condition during two consecutive seasons of 2019 and 2020 to identify the source of resistance against leaf roller and capsule borer (Antigastra catalaunalis Dup.) at AICRP on oilseeds sesame center of JNKVV, College of Agriculture, Tikamgarh (M.P.). The sesame accession were categorized as highly resistant (HR), resistant (R), moderately resistant (MR), susceptible (S) and highly susceptible (HS) based on the cumulative score (0-9) and grade (1-9) of the individual accsession. Among 131 accession viz., In pooled analysis, leaf damage ranged from 0.0 to 40.0 against 40.0 and 0.0 per cent on susceptible and resistant checks, Flower damage ranged from 0.0 to 29.6 against 15.85 and 1.3 per cent on susceptible and resistant checks , respectively, while capsules damage ranged from 0.0 to 17.15 per cent against 3.05 and 0.4 % on susceptible and resistant checks, respectively. In pooled analysis none of the accession were found free from infestation of A. catalaunalis. Based on the cumulative scoring ,twenty one accession namely EC-334961-1, Annand local, IS-653-A, NIL-16426, IC-14331, NIC-8282, IS-387, G-13, EC-334955, NIC-8062, G-8, SI-1925, EC-35000, G-19, IS-90, GRT-83138, EC-303423-C, NIC-17362-A, ES-310420, IS-178-C, SI-250 and forty one accession namely S-0481, ES-75, TILO/Hana, EC-335001-A, S-003116, NIC-16114-B, BS-61, EC-164966, KMR-90, EC-335003, IS-722-2-84-I, NIC-17477-I, 43994, Oct.-81, Ec-182832, NIC-8033, G-2, G-6, NIC-9835, IS-77, GRT-8327, S-0619, ES-131-I-84, IC-152485, IS-449, IS-150-3-84, ES-64, IC-30884 ,GRT-8359, S-0281, IS-712, GRT-83128, NIC-16218, KJS-21, NIC-14730, Juland Sahame, SI-1865-1-B, GSM-21, IS-346, S-01159-C, GRT-8336. With resistance check, SI -250 (RC) were rated as highly resistant and resistance these could be a possible source of resistance and used in breeding programs to develop resistant varieties. These germplasm lines might be exploited in the hybridization programs for development of the resistant cultivars.