TITLE:
Reaction of Sesame (Sesamum indicum Linn.) Mutant Generations against Webworm, Antigastra catalaunalis Duponchel
AUTHORS:
M. Saravanaraman, V. Selvanarayanan, K. Saravanan
KEYWORDS:
Sesamum, Mutants, Antigastra, Resistance
JOURNAL NAME:
Advances in Entomology,
Vol.5 No.1,
January
16,
2017
ABSTRACT: Sesame (Sesamum indicum Linn.)
(Pedaliaceae) is an important oilseed crop grown in many countries. Among the
insect pests infesting sesame, the webworm, Antigastra catalaunalis Duponchel (Pyraustidae: Lepidoptera) is predominant throughout the crop period.
For managing this insect, resistant sesame varieties with higher yield
potential and better adaptability to varied locations are essentially needed.
Keeping this in view and based on
earlier work, three promising accessions viz., IVTS-2001-7, KMR-102 and
TMV-3 were selected. To enhance resistance and/or yield traits, these three
accessions in comparison with a susceptible check SVPR 1 were subjected to
mutagenesis using gamma rays as physical mutagen; Ethyl Methane
Sulphonate (EMS) and Diethyl Sulphate (DES) as chemical mutants. The first and generation mutants were evaluated
under field conditions at Methikudi village, Cuddalore district, Tamil
Nadu, Southern India during May, 2012-September, 2014. Webworm infestation was evaluated based on leaf, flower and
capsule damage. Among the first mutant
(M1) and second mutant (M2) generations, plants of
the accessions namely IVTS 2001-7 and TMV-3 were rated as resistant and plants of SVPR-1 were highly
susceptible to A. catalaunalis.