Indian Journal of Entomology
Open Access
SCOPUSWeb of Science
  • Year: 2024
  • Volume: 86
  • Issue: 4

Screening of castor germplasm against tobacco caterpillar Spodoptera litura F and castor semilooper Achaea janata L

  • Author:
  • B Keerthana1,*, M S V Chalam1, P Radhika2, P Lavanya Kumari3
  • Total Page Count: 3
  • Published Online: Apr 4, 2025
  • Page Number: 1286 to 1288

1Department of Entomology, SV Agricultural College, Tirupati, 517502, ANGRAU, Andhra Pradesh, India

2Department of Entomology, Agricultural Research Station, Anantapur, 515701, Andhra Pradesh, India

3Department of Statistics and Computer Applications, SV Agricultural College, Tirupati, 517502, ANGRAU, Andhra Pradesh, India

*Email: keerthananov896@gmail.com (corresponding author): ORCID ID 0009-0001-6344-9986

Online published on 4 April, 2025.

Abstract

Twenty three castor genotypes screened against two important pests viz., Spodoptera litura (F) and Achaea janata (L). The results revealed that none of the genotypes were resistant. Based on the defoliation scale nine genotypes viz., GC-3 (9.86% defoliation), ICS-164 (10.13%), DCH-519 (10.48%), YTP-1 (10.92%), DCS-107 (11.78%), DCS-8g (12.70%), DCS-9 (12.72%), 48–1 (13.63%) and GC-2 (14.33%) were categorised as tolerant to S. litura and A. janata. Three genotypes viz., Haritha (21.58%), SKI-215 (23.81%) and SKI- 291 (24.07%) were categorised as moderately tolerant. In these genotypes, the minimum larval incidence range was 0.31 to 0.51 larvae plant-1 in case of S. litura, whereas the minimum larval incidence range was 0.49 to 0.64 larvae plant:1 in case of A. janata.

Keywords

Spodoptera litura, Achaea janata, Genotypes, GC-3, ICS-164, Defoliation, Defoliation scale, Resistant, Moderately resistant, Minimum, Larval incidence, Larvae plant-1