A method for isolating and characterizing homozygous S-allele lines in Brassicae.

A method for isolating and characterizing homozygous S-allele lines of brassicas is described. The tester plants used are produced by crossing the parent plants with a recessive S-allele homozygote. The full method uses reciprocal crosses to identify and characterize the lines immediately. When flowering is prolonged and enables further tests to be carried out, a more efficient method that only uses single crosses initially can be used.