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ARS Home » Pacific West Area » Wapato, Washington » Temperate Tree Fruit and Vegetable Research » Research » Research Project #438608

Research Project: Identification of Pear Tree Volatiles Attractive to Winterform Psylla

Location: Temperate Tree Fruit and Vegetable Research

Project Number: 2092-22430-003-05-T
Project Type: Trust Fund Cooperative Agreement

Start Date: Jul 1, 2020
End Date: Jun 30, 2023

Objective:
1) Determine if volatiles emitted by post-dormant (bud-swell) pear trees are attractive to post-diapause winterform pear psylla. 2) Identify pear tree volatiles that are responsible for attraction of post-diapause winterform pear psylla. 3) Develop a synthetic lure, based on attractive pear tree volatiles, that can be used in a trap to detect, monitor, or manage migrating post-diapause winterform pear psylla.

Approach:
Volatiles will be collected from pear trees in early to late spring and identified using gas chromatography (GC), GC-mass spectrometry (GC-MS), and GC-electroantennogram detection (GC-EAD).Compounds identified will be synthesized or purchased for lure formulation. Attraction to pear volatiles by post-diapause winterform pear psylla will be assayed using GC-EAD, Y-tube olfactometry, and field assays.