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Effect of methyl jasmonate (MeJA)-induced defenses in rice against the rice leaffolder Cnaphalocrocis medinalis (Guenèe) (Lepidoptera: Pyralidae)



Effect of methyl jasmonate (MeJA)-induced defenses in rice against the rice leaffolder Cnaphalocrocis medinalis (Guenèe) (Lepidoptera: Pyralidae)



Pest Management Science 2018



Methyl jasmonate (MeJA) activates host defense mechanisms against insect pests of agricultural importance, and regulates defense responses against living and non-living stresses in various plant species. Rice leaf-folder (Cnaphalocrocis medinalis Guenèe, Lepidoptera: Pyralidae) feeding activity and mortality were evaluated after MeJA treatment of rice plants ASD-16. Rice plant resistance was activated through the topical application of MeJA to rice leaves. Feeding deterrence occurred with application of 2.5 and 5 mm MeJA solution. Feeding activity and consumption rates were significantly different, being reduced compared with controls post MeJA treatment. Significantly greater mortality was seen in second instars post treatment with 2.5 and 5 mm MeJA. Survival was significantly reduced for larvae and adults post treatment. Application of MeJA as a topical spray onto rice plants significantly altered the biology and survival of the leaf-folder, having an effect on all life stages. © 2018 Society of Chemical Industry.

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Accession: 059882568

Download citation: RISBibTeXText

PMID: 29998605

DOI: 10.1002/ps.5139


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