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Ontario Grain Farmer Magazine

OCC corn hybrid DON/GER evaluations

Principal Investigator: Ontario Corn Committee (OCC)

Research Institution: Ontario Corn Committee (OCC)

Timeline: January 2019 – Ongoing   

Objectives:

  • Identify appropriate reliable field screening methods for determining hybrid susceptibility to Gibberella ear rot (GER) and deoxynivalenol (DON) accumulation and assess DON susceptibility of commercially relevant corn hybrids.

Impacts:

  • Will enable reliable field screening of corn lines for resistance to GER and DON accumulation so that hybrid resistance can be improved, and will eventually enable growers to obtain reliable GER/DON resistance ratings for commercial corn hybrids.

Scientific Summary:

Each year, corn seed companies submit commercially relevant corn hybrids to the Ontario Corn Committee (OCC) to be evaluated by expert researcher teams for susceptibility to deoxynivalenol (DON) mycotoxin accumulation. The corn hybrids are assessed for Gibberella ear rot (GER)/DON levels each year across at least two irrigated, inoculated nursery field sites. Appropriate field-based resistance screening methods are in development, and then the intent is to evaluate resistance of commercial corn hybrids to GER and DON accumulation to assist growers making decisions about which hybrids to plant.

The trials follow the agreed upon OCC protocols developed by the OCC members and researchers each year.

External Funding Partners:

Ontario Ministry of Agriculture, Food and Rural Affairs

Various corn seed companies and corn processing companies

Various corn end users

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Grain Farmers of Ontario
Grain Farmers of Ontario is the province’s largest commodity organization, representing Ontario’s 28,000 barley, corn, oat, soybean, and wheat farmers. The crops they grow cover over 6 million acres of farm land across the province, generate over $4.1 billion in production value, result in over $27 billion in economic output and are responsible for over 90,000 jobs in the province.