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Identification of male-specific active host plant volatiles for maize stem borer, Chilo partellus Swinhoe


Affiliations
1 Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
2 Department of Entomology and Nematology, ICAR-Indian Institute of Horticultural Research, Hessarghatta, Bengaluru 560 089, India
3 ICAR-Indian Institute of Maize Research, Punjab Agricultural University Campus, Ludhiana 141 004, India
 

The present study was conducted to identify male-specific active plant volatiles from maize against Chilo partellus. The gas chromatography-electroantennogram detector evaluation of volatile extracts collected from maize plant through dynamic headspace collection revealed the presence of six electrophysiologically active volatiles for male, viz. toluene, 2-ethyl-1-hexanol, 4-hydroxy-4-methyl-2-pentanone, 1,4-dichloro­benzene, p-isopropyl benzaldehyde (cuminaldehyde) and p-xylene. Electroantennogram analysis of selective synthetic volatiles against male moths revealed significantly higher response to geranyl acetate, cuminaldehyde, linalool and 2-ethyl-1-hexanol. Electroantennogram studies showed dose-dependent responses of male moths against geranyl acetate, cuminaldehyde, linalool and 2-ethyl-1-hexanol up to 50 mg, above which saturation of antennal response was noticed. These findings will help to study the synergistic activity of identified volatiles with pheromone compounds for developing more effective lure for C. partellus monitoring and mass trapping.

Keywords

Dynamic headspace collection, gas chromatography-electroantennogram detector, maize stem borer, male-specific active volatiles.
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  • Identification of male-specific active host plant volatiles for maize stem borer, Chilo partellus Swinhoe

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Authors

Niraj Guleria
Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
Suresh M. Nebapure
Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
P. D. Kamala Jayanthi
Department of Entomology and Nematology, ICAR-Indian Institute of Horticultural Research, Hessarghatta, Bengaluru 560 089, India
S. B. Suby
ICAR-Indian Institute of Maize Research, Punjab Agricultural University Campus, Ludhiana 141 004, India
P. Saravan Kumar
Department of Entomology and Nematology, ICAR-Indian Institute of Horticultural Research, Hessarghatta, Bengaluru 560 089, India

Abstract


The present study was conducted to identify male-specific active plant volatiles from maize against Chilo partellus. The gas chromatography-electroantennogram detector evaluation of volatile extracts collected from maize plant through dynamic headspace collection revealed the presence of six electrophysiologically active volatiles for male, viz. toluene, 2-ethyl-1-hexanol, 4-hydroxy-4-methyl-2-pentanone, 1,4-dichloro­benzene, p-isopropyl benzaldehyde (cuminaldehyde) and p-xylene. Electroantennogram analysis of selective synthetic volatiles against male moths revealed significantly higher response to geranyl acetate, cuminaldehyde, linalool and 2-ethyl-1-hexanol. Electroantennogram studies showed dose-dependent responses of male moths against geranyl acetate, cuminaldehyde, linalool and 2-ethyl-1-hexanol up to 50 mg, above which saturation of antennal response was noticed. These findings will help to study the synergistic activity of identified volatiles with pheromone compounds for developing more effective lure for C. partellus monitoring and mass trapping.

Keywords


Dynamic headspace collection, gas chromatography-electroantennogram detector, maize stem borer, male-specific active volatiles.

References





DOI: https://doi.org/10.18520/cs%2Fv121%2Fi4%2F578-581