Comparison of augmenteo partial diallel cross to complete diallel cross

The augmented partial diallel cross (APDC) is a combination of the complete diallel cross (CDC) and partial diallel cross (POC) wherein one or more primary lines are crossed with all other lines but the lines of secondary interest form a PDC system. The method of sampling adopted for crosses of secondary lines is of circular type. Using the principle of least squares, the analysis of APOC is developed and is applied to the data collected on various traits of maize. The data collected is analysed for CDC using the same number of lines following Griffing's method. The efficiency of estimates of general combining ability (gca) effects obtained from APDC has been compared with that of CDC.