Partial diallel: Not all the crosses of a half-diallel are made. There are no reciprocals or selfs. The goal is to reduce the breeding workload for a given sample of parents by making less than n(n-1)/2 crosses for n parents.
Figure 5.1: A half-‐diallelmating without selfs (left) and partial mating designs (right). There are many variations of diallels used in plant breeding.