Because the mutation left the fruit seedless and, therefore, sterile, the only method to cultivate navel oranges was to graft cuttings onto other varieties of citrus trees.
The navel oranges produced on the island are among the best in the world.
Some cultivars of citrus fruits (especially navel oranges), satsumas, mandarin oranges, table grapes, grapefruit, and watermelons are valued for their seedlessness.
Today, navel oranges continue to be propagated through cutting and grafting.
Its name is a reference to the navel orange.
