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Behavioral response of female Helicoverpa armigera (Hübner) to different plant part extracts of African marigold Tagetes erecta (L.)
Author(s) -
SENI Atanu,
DILAWARI Vinod K.,
GUPTA Virash K.
Publication year - 2010
Publication title -
entomological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 20
eISSN - 1748-5967
pISSN - 1738-2297
DOI - 10.1111/j.1748-5967.2009.00259.x
Subject(s) - tagetes , biology , helicoverpa armigera , olfactometer , botany , trichome , horticulture , larva , ecology , host (biology)
The flowering stage of African marigold Tagetes erecta (L.) was the most preferred for oviposition by Helicoverpa armigera (Hübner). The lower sides of leaf margins received more eggs compared to buds, stem tip and flowers. Olfactometer studies revealed that more female moths were attracted towards the flower extracts, followed by leaf, bud and stem tip extracts of African marigold. The thin layer chromatography analysis of these extracts showed a blend of compounds including careen, ocimene, methyl benzoate, phenyl acetaldehyde and phenyl ethanol. Attempts have been made to correlate insect behavior with the presence of these compounds.