The components of a synthetic variety consist of a number of

The components of a synthetic variety consist of several Open pollinated varieties.
A synthetic variety is developed by intercrossing several genotypes of known superior combining ability i.e., genotypes that are known to give superior hybrid performance when crossed in all combinations.
Synthetic variety is a variety that is developed by inter-mating in all possible combinations of several inbred lines with good general combining ability and mixing their seeds equally whereas composite variety is a variety that is developed by mixing the seed of various genotypes.