The gametophytic nature of self-incompatibility in almond (Prunus dulcis Miller) is well known. When self-incompatible cultivars are self-pollinated, pollen tubes usually grow as far as the first half of the style but do not reach the ovary. Due to the proximity between the anthers and the stigma of each flower, the first pollen reaching the stigma is frequently its own pollen. The growth of its own pollen consumes the reserves of the style. If these reserves are used up, compatible pollen arriving from another cultivar later might not be able to grow along the style and reach the ovary, preventing fecundation and, consequently, fruit set. However, the results show that there is no clear effect of previous self-pollination of these self-incompatible almonds on later cross-compatible pollination. The fruit set was not affected.