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This investigation was conducted in order to determine the degree of biochemical changes during accelerated and natural aging of sunflower seed. Five sunflower lines developed in Novi Sad, submitted to accelerated aging for three and five days, and natural aging of six and twelve months under conventional storage and controlled conditions, were used in these trials. Malondialdehyde, superoxide dismutase contents and peroxidase activities were studied. Lipid peroxidation and superoxide dismutase and peroxidase activities (especially pronounced in accelerated aging variant) were caused by both types of aging. The degree of seed damage and the ability of seed to resist the negative consequences of aging were influenced, beside duration of aging period, by type of storage and characteristics of sunflower lines.

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INFLUENCE OF AGING PROCESS ON BIOCHEMICAL CHANGES IN SUNFLOWER SEED / INFLUENCIA DEL PROCESO DE ENVEJECIMIENTO EN LOS CAMBIOS BIOQUÍMICOS EN LA SEMILLA DE GIRASOL / EFFET DU PROCESSUS DE VIEILLISSEMENT SUR LES CHANGEMENTS BIOCHIMIQUES DANS LA GRAINE DE TOURNESOL