The understanding of the relationship between grain yield and shoot architecture is limited. Thus, our overall focus is on examining the relationship between these two traits, and manipulating variation for shoot architecture with the goal to increase yield. Unfortunately, the genetic base of soybean breeding programs is relatively narrow and this lack of diversity results in a bottleneck for soybean improvement. Mutant populations and natural variation in germplasm collections harbor individuals with phenotypes that extend beyond what exists within breeding programs, providing potential germplasm for soybean improvement. With this purpose in mind, we exploited a fast neutron mutant population...