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United States Department of Agriculture

Agricultural Research Service

Research Project: Grape Cultivar Improvement

Location: Grape Genetics Research

Project Number: 1910-21220-006-03
Project Type: Trust

Start Date: May 15, 2011
End Date: May 14, 2015

Objective:
Improve genetic characterization of the Ren4 locus, conferring resistance to grapevine powdery mildew.

Approach:
1) Identify additional molecular markers linked with Ren4; 2) Genotype additional ARS-Parlier progeny segregating for Ren4 resistance to identify new recombinants; 3) Screen and sequence BAC library from Ren4 source vine to identify chromosome inserts containing or flanking Ren4; 4) Isolate candidate Ren4 resistance genes; 5) Test gene function in transient and stable expression systems to detect improved resistance.

Last Modified: 9/2/2014
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