Oroblanco based on pomelo
An oroblanco, oro blanco (white gold), pomelit (Israel) or sweetie (Citrus maxima Merr. × C. Paradisi Macf.) is a sweet seedless citrus hybrid fruit similar to grapefruit. It is often referred to as oroblanco grapefruit.Development
Oroblanco 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 by Robert Soost and James W. Cameron at that university's citrus experiment station in Riverside, California. The nine-year project began in 1958 and led to a series of test plantings before a successful variation was refined.