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Globally, over 60% of groundnuts produced are crushed for extraction of edible oil.Groundnut seeds contain 48-50% oil, and oleic (O) and linoleic (L) fatty acids constitute about 80% of the oil.The O/L ratio in most groundnut genotypes is about 2, however, in the case of FAD (Fatty Acid Desaturase) gene mutants, it can go up to >20.Two homeologous genes (FADA and FADB)encoding for desaturase are located on the A and B genomes, respectively.