Phospholipid Changes in Wheat Embryos Aged Under Different Storage Conditions

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Abstract
An analysis of the major phospholipid classes was carried out on embryos isolated from wheat seed lots (Triticum durum L. cv. Appulo) aged under natural and artificial ageing conditions. All the accelerated ageing treatments reduced total extractable embryo phospholipid much more than natural ageing. On increasing the harshness of the accelerated ageing method, the proportion of phosphatidyl choline present was decreased and that of phosphatidic acid increased; these changes were observed after short periods of storage, before any fall in germination had occurred. The results suggest that phospholipid damage and the consequent membrane deterioration are an early event in seed viability loss. However, these changes are closely related to storage conditions.

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