The association schemes of partially balanced incomplete block (PSIS) designs can be advantageously used for sampling the diallel crosses when the number of inbred lines involved are large. Here, the method for obtaining partial diallel cross (PDC) plans based on some existing 3-associate class association schemes alongwith some new schemes, have been discussed. The efficient plan (for a given number of lines and for a given association scheme) has been obtained based on the information per cross as compared to a complete diallel cross plan. Parameters of various PDC plans alongwith their efficiencies have been tabulated for a practical range of number of lines.
Partially balanced incomplete block design, association scheme, partial diallel cross, information per cross
