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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Research » Research » Research Project #437199

Research Project: Immunity to Potato Cyst Nematodes

Location: Horticultural Crops Research

Project Number: 2072-22000-043-42-I
Project Type: Interagency Reimbursable Agreement

Start Date: Jul 1, 2019
End Date: Jun 30, 2020

Objective:
1. Development of russet and processing types of potato that possess strong resistance/immunity to Potato Cyst Nematode (PCN). 2. Exploration of wild potato species for broad-spectrum resistance to Globodera.

Approach:
Potato seedlings will be germinated in the greenhouse from the true potato seed generated following proposed hybridizations for the production of seedling tubers. Each seedling tuber represents a unique genotype (individual) that has the potential for release as a potato variety. Seedling tubers will be planted in the field and plants will be maintained and selections will be made at harvest for individuals having long, russet-skinned, tubers. Individuals will be maintained in the program for further agronomic evaluations and tubers sent to cooperators in New York, Idaho and Oregon for screening for infestation response to the Globodera species unique to their respective state. Hybrid progenies identified as resistant will be maintained in the program for further agronomic evaluations in replicated yield trials to assess variety potential and for further screening for response to PCN. Wild potato accessions showing an HR phenotype in the infiltrated leaves will be further evaluated for nematode resistance for G. rostochiensis, G. pallida, and G. ellingtonae, respectively, using established protocols.