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ARS Home » Pacific West Area » Parlier, California » San Joaquin Valley Agricultural Sciences Center » Crop Diseases, Pests and Genetics Research » Research » Research Project #434036

Research Project: Novel Field-Based Diagnostic Strategies for Management of Powdery Mildew in California Specialty Crops

Location: Crop Diseases, Pests and Genetics Research

Project Number: 2034-21220-007-17-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Nov 1, 2018
End Date: Apr 30, 2021

Objective:
Develop molecular tools to identify fungicide-resistant powdery mildew isolates in the field.

Approach:
1) Assess fungicide sensitivity, stability and geographic distribution of isolates collected from fresh and wine grapes across two seasons. 2) Validate molecular assays for monitoring resistance to Quinone outside inhibitor and sterol 14a-demethylation inhibitor fungicides in Erisyphe necator and develop markers for other groups (e.g. quinoxyfen). 3) Evaluate fungicide sensitivity and transferability of diagnostic assays in powdery mildew species on strawberry and apple.