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ARS Home » Midwest Area » Madison, Wisconsin » Vegetable Crops Research » Research » Research Project #439283

Research Project: CucCAP2: Harnessing Genomic Resources for Disease Resistance and Management in Cucurbit Crops – Bringing the Tools to the Field

Location: Vegetable Crops Research

Project Number: 5090-21000-069-55-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Sep 1, 2020
End Date: Aug 31, 2024

Objective:
1. Develop and characterize cucumber core population (390 lines) 2. Molecular mapping of downy mildew (DM) resistances in cucumber 3. Marker-assisted pyramiding of DM resistance QTL and evaluation of enhanced germplasm with multiple disease resistances.

Approach:
Objective 1: 1) Re-sequence 284 cucumber lines. 2) Phenotype for target traits in this collection for downy mildew resistance. 3) Conduct association analysis. Objective 2: 1) Fine mapping of major-effect QTLs. 2) QTL mapping of DM resistance in PT108 from exotic source. 3) Marker-assisted QTL pyramiding into elite pickling cucumber background