Grain
Thatcher
C tier
Thatcher is a hard red spring wheat released in the United States in 1934, celebrated for stem-rust resistance that protected North American crops during severe rust years. Bred in Minnesota from Marquis and other parents, it combined acceptable baking quality with durable field performance. Flour from Thatcher-type spring wheat supported standard pan bread with solid protein and gluten. Commercially superseded by later rust-resistant cultivars, Thatcher remains famous in breeding history and as a genetic contributor to mid-century CWRS-style quality.
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History
Minnesota breeding programmes crossed Marquis-related lines seeking rust resistance and baking strength.
Thatcher was released and rapidly adopted across the northern U.S. spring-wheat belt.
Canadian growers and breeders used Thatcher widely during stem-rust pressure on the Prairies.
Thatcher acreage surged as rust epidemics demonstrated its field advantage.
Newer cultivars with broader disease packages began replacing Thatcher commercially.
Thatcher persisted in pedigrees of many spring bread wheats as a rust-resistance parent.