Resistance alleles in soybean

A method of producing an Asian Soybean Rust (ASR) tolerant soybean plant or part thereof, the method comprising the steps of:

• a. isolating a nucleic acid from a first soybean plant or part thereof;
• b. detecting in said nucleic acid, the presence of a marker associated with ASR tolerance in a soybean plant, wherein said marker is located within a chromosomal interval on soybean chromosome 18 corresponding to physical positions 58,722,971-60,802,607 and further wherein the chromosomal interval comprises an allele associated with ASR tolerance, wherein said allele corresponds to an A at position 806 of SEQ ID NO:
• 2;
• c. crossing the first soybean plant having in its genome the marker associated with ASR from b) with a second soybean plant not comprising said marker;
• and
• d. producing a progeny soybean plant from the cross of c) wherein said progeny plant comprises in its genome the marker detected in b).