The
oroblanco (
Citrus maxima ×
C. Paradisi) is a sweet seedless
citrus hybrid fruit. It was developed as a cross between a
diploid acidless
pomelo and a seedy white tetraploid
grapefruit, resulting in a triploid seedless fruit that is less acidic and less bitter than the grapefruit. The oroblanco was patented by the
University of California in 1981 after its development at
the university's citrus experiment station by
Robert Soost and
James W. Cameron. Oroblancos are either round- or oval-shaped with a thicker rind than grapefruit. The fruit is available from September through December and can be peeled and eaten like an orange. A similar fruit named the "sweetie" has been commonly cultivated in Israel since 1984. This photograph shows oroblancos grown in Israel, one whole and one sectioned. The picture was
focus-stacked from 12 separate images.
Photograph credit: Ivar Leidus
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