20 Kas 2024 Çarşamba
Impact of cabbage and cauliflower emitted volatile organic compounds on the foraging response of Plutella xylostella and Cotesia plutellae
Abstract : A choice bioassay study was conducted to assess the impact of volatile cues obtained from selected Cabbage and Cauliflower varieties on Plutella xylostella Land Cotesia plutellae (Kurdjumov) (Hymenoptera: Braconidae). Gas Chromatography-Mass Spectrometry (GC-MS) profiling was performed to identify the signaling molecule present in the pool of volatile cues. All Cabbage varieties and Cauliflower varieties, Kanchan Plus and Samridhi HF-I displayed significant repellent activity for the pest. Cabbage Local, Farm Sona HF-1 and Pusa Meghna and Samridhi HF-I had shown significant attractant activity for parasitoids. GC-MS analysis based on comparison with the National Institute Standard and Technology (NIST) library indicated the presence of Heptane, Octane, Dodecane Tridecane, Tetradecane, Pentadecane, Hexadecane, Heptadecane, Octadecane, Nonadecane, Eicosane, Heneicosane, Tetracosane and Pentacosane, etc. in varying quantities were present in varying quantity. The presence of these alkanes may be responsible for eliciting significantly higher foraging responses in pest and parasitoid.