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Expression of resistance to the pod borer Helicoverpa armigera (Lepidoptera: Noctuidae), in relation to high-performance liquid chromatography fingerprints of leaf exudates of chickpea

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Relation http://oar.icrisat.org/7127/
http://dx.doi.org/10.1017/S1742758413000234
 
Title Expression of resistance to the pod borer Helicoverpa armigera (Lepidoptera: Noctuidae), in relation to high-performance liquid chromatography fingerprints of leaf exudates of chickpea
 
Creator Narayanamma, V L
Sharma, H C
Vijaya, P M
Gowda, C L L
Sriramulu, M
 
Subject Chickpea
 
Description The noctuid moth Helicoverpa armigera (Hubner) is the most damaging pest of chickpea worldwide. Plant resistance is an important component for the management of this pest. To develop cultivars with resistance to insects, it is important to understand the role of different components associated with resistance to insects. Therefore, we characterized a diverse array of chickpea genotypes for organic acid profiles in the leaf exudates that are associated with resistance to H. armigera. Chickpea leaf exudates contained five major organic acids that were identified as malic, oxalic, acetic, citric and fumaric acids. High-performance liquid chromatography (HPLC) profiles of the leaf exudates of nine chickpea genotypes showed that amounts of malic acid were negatively correlated with leaf feeding by H. armigera larvae at flowering and maturity, and with pod damage. Oxalic acid showed a negative association with leaf damage in the detached leaf assay. Additionally, the amounts of acetic acid were negatively correlated with larval weights and damage rating at the flowering and maturity stages. Citric acid levels were negatively associated with damage rating at the flowering stage. Implications of using the HPLC profiles of organic acids in the leaf exudates of chickpea to breed for resistance to H. armigera are discussed.
 
Publisher International Centre of Insect Physiology and Ecology, Nairobi, Kenya
 
Date 2013
 
Type Article
PeerReviewed
 
Format application/pdf
application/pdf
 
Language en
en
 
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Identifier http://oar.icrisat.org/7127/1/IJTIS_Expression_1-7_2013.pdf
http://oar.icrisat.org/7127/7/IJTIS_Sharmaetal_2013.pdf
Narayanamma, V L and Sharma, H C and Vijaya, P M and Gowda, C L L and Sriramulu, M (2013) Expression of resistance to the pod borer Helicoverpa armigera (Lepidoptera: Noctuidae), in relation to high-performance liquid chromatography fingerprints of leaf exudates of chickpea. International Journal of Tropical Insect Science, 33 (4). pp. 276-282. ISSN 1742-7592