Electronic Journal of Plant Breeding

Open Access
SCOPUS
  • Year: 2019
  • Volume: 10
  • Issue: 2

Screening of paddy varieties against angoumois grain moth, Sitotroga cerealella Oliv.

  • Author:
  • Sandra Maria Mathew1, S. Jeyarajan Nelson2,, R. P. Soundararajan3, D. Uma4, P. Jeyaprakash5
  • Total Page Count: 7
  • Page Number: 476 to 482

1M. Sc.(Ag), Department of Agricultural Entomology, TNAU, Coimbatore-641 003, India

2Professor (Agricultural Entomology), Department of Agricultural Entomology, TNAU, Coimbatore-641003, India

3Associate Professor (Agricultural Entomology), Horticultural College and Research Institute for Women, TNAU, Trichy-620 027, India

4Professor and Head, Department of Biochemistry, TNAU, Coimbatore-641 003, India

5Professor and Head, Department of Plant Breeding and Genetics, Anbil Dharmalingam Agricultural College and Research Institute, TNAU, Trichy-620 027, India

Abstract

Studies were undertaken to identify the resistant genotypes of paddy to Angoumois grain moth, Sitotroga cerealella (Oliver.) under laboratory conditions. The parameters viz., moth emergence, loss in the quality and quantity of grains and developmental period were assessed. Among the sixty six genotypes and fourteen varieties screened, none of them was completely immune to insect infestation. The resistant genotypes include RMLT-108, RMLT-505. Among the genotype the RMLT-104, which falls under moderately resistant category showed the maximum per cent grain content loss, per cent damage and adult emergence, whereas the least was shown by RMLT-505. According to the dobie's susceptibility index the resistant genotype was RMLT-108 and the least resistance was for CB-16 116. The mean developmental period was found inversely correlated with the resistance. With the advances in biotechnology, it is possible to transfer the desirable characters to the other varieties to improve their resistance to Sitotroga cerealella.

Keywords

Paddy, Sitotroga cerealella, resistance, storage pests, screening, damage