78 F5-derived recombinant inbred lines. Evaluation based on a bulk of 5 to 10 plants per line. Clones were chosen from a wheat chromosomal arm map to sample all chromosome arms. Additional clones, not previously located to chromosome arm, were utilized to give 195 clones surveyed for polymorphism with 4 restriction enzymes. RI lines were probed with 37 of the polymorphic clones.