Abstract:Wanyuan50-2, a new dwarf line of wheat, is shorter than the normal dwarfing sources and with good agronomic characters. It was found that there are four of more than four dwarfing genes in this line. They are Rhtls on chromosome 4B, Rht 8 on 2D, Rht9 on 7B, and Rht(Wan), a new GA-insensitive dwarfin