Induced resistance to Helicoverpa armigera through exogenous application of jasmonic acid and salicylic acid in groundnut, Arachis hypogaea

War, A R and Paulraj, M G and Ignacimuthu, S and Sharma, H C (2015) Induced resistance to Helicoverpa armigera through exogenous application of jasmonic acid and salicylic acid in groundnut, Arachis hypogaea. Pest Management Science, 71 (1). pp. 72-82. ISSN 1526-4998

[img]
Preview
PDF (Author version pre-print)
Download (584kB) | Preview
[img]
Preview
PDF - Published Version
Download (1MB) | Preview

Abstract

Background Induced resistance to Helicoverpa armigera through exogenous application of jasmonic acid (JA) and salicylic acid (SA) was studied in groundnut genotypes (ICGV 86699, ICGV 86031, ICG 2271 and ICG 1697) with different levels of resistance and the susceptible check, JL 24 under greenhouse conditions. Activities of oxidative enzymes and the amounts of secondary metabolites and proteins were quantified at 6 days after JA and SA application/insect infestation. Data was also recorded on plant damage and H. armigera larval weights and survival. Results Higher levels of enzymatic activities and the amounts of secondary metabolites were observed in the insect-resistant genotypes pretreated with JA and then infested with H. armigera than in JL 24. The insect-resistant genotypes suffered lower insect damage and resulted in poor survival and lower weights of H. armigera larvae than JL 24.In some cases, both JA and SA showed similar effect. Conclusion JA and SA induced the activity of antioxidative enzymes in groundnut plants against H. armigera, and reduced its growth and development. However, induced response to application of JA was greater than SA, and resulted in reduced plant damage, larval weights and survival, suggesting that induced resistance can be used as a component of pest management in groundnut.

Item Type: Article
Divisions: RP-Dryland Cereals
RP-Grain Legumes
CRP: CGIAR Research Program on Grain Legumes
Uncontrolled Keywords: groundnut;Helicoverpa armigera;induced resistance;secondary metabolites;antioxidant enzymes;jasmonic acid;salicylic acid
Subjects: Mandate crops > Groundnut
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 25 Feb 2014 07:55
Last Modified: 21 Oct 2016 08:45
URI: http://oar.icrisat.org/id/eprint/7553
Official URL: http://dx.doi.org/10.1002/ps.3764
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: We are highly thankful to the entomology staff, ICRISAT, for their assistance in carrying out the experiments
Links:

Actions (login required)

View Item View Item