Is grapefruit a result of cross breeding between orange and pomelo?

The grapefruit was first noticed on Barbados in 1750 and is regarded as the result of a natural cross breeding between the orange and the pomelo, a citrus fruit that was brought from Indonesia to Barbados in the seventeenth century. By 1880, the grapefruit had become an important commercial crop in Florida, which is still a major producer of grapefruits in the United States, along with California,Arizona, and Texas. Grapefruits are also commercially produced in Israel, South Africa, and Brazil.

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