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Pakistan is deficient in production of edible oil. Domestic edible oil production needs to be increase. Brassica rapa can be a better source for filling the gap between consumption and production of oil production, due to its yellow seeded nature. The goal of this study is to gather and develop information on genetics of different plants and seed yield related traits of Brassica rapa. A randomized complete block design is used for estimation of the genetic expression on seed yield related traits using four lines (UAF-11, Toria, BSA and TP-124-1) in diallel fashion. Statistical analysis was analyzed using Statistix 8.1. The presence of partial dominance type of gene action and the absence of epistasis was observed. Partial dominant gene action was observed in all traits. Direction of dominance was more frequent towards better parents except seed yield per plant. The number of recessive genes were more than that of dominant genes except number of seeds/siliqua. Maternal effects were observed in all traits. This study shows that UAF-11 is the best parent for Brassica rapa because it has the maximum dominant genes for almost all traits and can be utilized in future breeding efforts.

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