In present investigation on generation mean analysis carried out study on components of variance in two safflower crosses. Except for days to 50% flowering in cross GDVC-2 × LC-1 and pod length in both crosses, the estimate of significant simple scaling tests and joint scaling tests revealed the presence of epistatic gene effects for seed yield and its component characteristics in both crosses. Seed yield and its components were shown to be affected by both additive and non-additive genetic variations, with non-additive gene activity predominating. All three forms of non-allelic interactions contribute more to reducing alleles of dominance × dominance (l) in various characteristics when it comes to epistasis effects. The majority of the characters had duplicate epistasis.

Cowpea, Gene action, Generation mean, Scaling Test