lmprovement of Resistance to Headblight of Wheat By Recurrent Selections with Taigu Nucleus Sterile Line

The finding of Taigu nucleus sterile wheat promoted the study on improving resistance to headblijght of wheat.The recurrent selections with the wheat, by ways of repeatedly screening,crossing, gene recombining and gene adding, makes it possible to gradually and effectively recom-bine and accumulate the genes of resistance to headblight disease.With the work of recurrent selsc-tions for 10 years and the appraisal of resistance in different sites, the studies have resulted in 7 strains with the resistance exceeding Sumai No.3 and 35 strains with the resistance similar to Sumai No.3.among which most strains matured earlier than Sumai No.3.Some of them have been used as the resistance resources by the breeding groups of 8 provinces all over the country.