由矮腥病菌引起的矮腥黑穗病于1952年在安大略省首次发现。由于病原菌是土壤带菌也是种子带菌的,这病即刻引起安大略冬小麦种植者的关心。关心带病种子会污染原来没有这病的田块,最终将使正个省内冬小麦地都受污染。 Dwarf disease caused by dwarf disease was first discovered in Ontario in 1952. Because the pathogen is soil-borne and seed-borne, the disease immediately raises concern in Ontario for winter wheat growers. Concerned that sick seeds will pollute the plots that did not have the disease and eventually will make the winter wheat in the province polluted.