Why Do Navel Oranges Have No Seeds?

Why Do Navel Oranges Have No Seeds? SEEDLESS FRUIT such as navel oranges are propagated asexually, usually by grafting. The most frequent reasons for lack of seed development are pollination failure, or nonfunctional eggs or sperm. … This property is exploited by citrus farmers who grow seedless fruits, such as navel oranges and clementines. Are