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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 #434805

Research Project: Identification of Grape Cultivars and Rootstocks with Resistance to Vine Mealybug

Location: Crop Diseases, Pests and Genetics Research

Project Number: 2034-21220-007-13-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Jul 1, 2017
End Date: Jun 30, 2019

Objective 1: Identify grape material with leaf resistance to vine mealybug. Objective 2: Evaluate grape materials with identified resistance to vine mealybug. Objective 3: Determine sustainability of resistance to vine mealy bug in grape rootstocks and cultivars identified.

Evaluate grape leaves in the lab for resistance to vine mealybug, either a reduction in viable offspring or a delay in development (Objective 1). Individual genotypes with lab-based resistance will be evaluated in the screen house for whole plant resistance. Plants with putative resistance will be monitored for insect severity and migration during the growing season (Objective 2) and for insect severity and overwintering survivability (Objective 3).