Open AccessInduced resistance in groundnut by jasmonic acid and salicylic acid through alteration of trichome density and oviposition by Helicoverpa armigera (Lepidoptera: Noctuidae)
Author(s) -
Abdul Rashid War,
Barkat Hussain,
H. C. Sharma
Publication year - 2013
Publication title -
aob plants
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.998
H-Index - 39
ISSN - 2041-2851
DOI - 10.1093/aobpla/plt053
Subject(s) - helicoverpa armigera , jasmonic acid , biology , salicylic acid , trichome , noctuidae , lepidoptera genitalia , botany , insect , infestation , horticulture , agronomy , genetics
Jasmonic acid (JA) and salicylic acid (SA) play an important role in activating plant defensive responses against insect pests. In these experiments, trichome density increased in groundnut plants by the pretreatment of JA and SA; however, JA induced significantly greater number of trichomes than SA. Moreover, JA activated antixenosis for oviposition by H. armigera . Insect resistant genotypes (ICGV 86699, ICGV 86031, ICG 2271 and ICG 1697) showed stronger response than the JL 24 (susceptible check). These results show that pre-treatment with JA not only resulted in greater trichome density in groundnut plants, but also conferred antixenosis for oviposition by H. armigera .
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