The effect of storage on biochemical composition of seeds located in dif ferent whorls of sunflower head at maturity has been studied. The proportion of filled seeds, yield parameters such as weight of seeds, kernels and oil per whorl and dry weight of seeds and kernels decreased from the peripheral towards the central whorls. Dry matter, oil and starch contents decreased after 180 days of storage at room temperature. The content of total soluble sugars increased while that of reducing sugars decreased in peripheral whorls from first to ninth positions during storage for 180 days. The storage of seeds located in central whorls lowered the proportion of oleic acid with a corre sponding increase in linoleic acid after 180 days. Thus, the seeds located in peripheral whorls were more productive and better for storage purposes than those in central whorls.